Matlab入门（英文）

晓夜寒风

Some MATLAB function descriptions
5 z2 n  Y4 M/ AThese lists are copied from the help screens for MATLAB Version 4.2c (dated Nov 23 1994). Only a few of the summaries are listed -- use Matlab's help function to see more.

% p8 Z6 T" l% C" y- ~>> help

晓夜寒风

HELP topics:

matlab/general       -  General purpose commands.
matlab/ops           -  Operators and special characters.
5 i* P8 r; y- o8 qmatlab/lang          -  Language constructs and debugging.
matlab/elmat         -  Elementary matrices and matrix manipulation.
- L$ B" T: a) o8 s2 y' @3 L$ z+ h( wmatlab/specmat       -  Specialized matrices.
matlab/elfun         -  Elementary math functions.
matlab/specfun       -  Specialized math functions.
matlab/matfun        -  Matrix functions - numerical linear algebra.
matlab/datafun       -  Data analysis and Fourier transform functions.
7 }- d! Y+ b8 [* C0 @matlab/polyfun       -  Polynomial and interpolation functions.
* }2 l2 d0 w/ j$ |matlab/funfun        -  Function functions - nonlinear numerical methods.
5 [5 K  O+ J! F/ lmatlab/sparfun       -  Sparse matrix functions.
* N5 f/ W/ ?7 A* o/ ?matlab/plotxy        -  Two dimensional graphics.
matlab/plotxyz       -  Three dimensional graphics.
+ `- r; s. }+ U. s* n6 Z: nmatlab/graphics      -  General purpose graphics functions.
matlab/color         -  Color control and lighting model functions.
matlab/sounds        -  Sound processing functions.
matlab/strfun        -  Character string functions.
$ k6 H2 E7 }8 `2 s$ z- Fmatlab/iofun         -  Low-level file I/O functions.
matlab/demos         -  The MATLAB Expo and other demonstrations.
toolbox/chem         -  Chemometrics Toolbox
" c5 a! g; M4 k' f( x/ Wtoolbox/control      -  Control System Toolbox.
+ J- q5 A! I9 r% w: x$ Q# Jfdident/fdident      -  Frequency Domain System Identification Toolbox
fdident/fddemos      -  Demonstrations for the FDIDENT Toolbox
& f2 c+ y- R! Wtoolbox/hispec       -  Hi-Spec Toolbox
toolbox/ident        -  System Identification Toolbox.
toolbox/images       -  Image Processing Toolbox.
3 O- W* D' |1 u# u7 M. t# m% o' ktoolbox/local        -  Local function library.
" D! M7 T  f$ @1 t1 P' `toolbox/mmle3        -  MMLE3 Identification Toolbox.
; L* S7 V& O2 l% A6 e3 T  ]mpc/mpccmds          -  Model Predictive Control Toolbox
mpc/mpcdemos         -  Model Predictive Control Toolbox
mutools/commands     -  Mu-Analysis and Synthesis Toolbox.: Commands directory
mutools/subs         -  Mu-Analysis and Synthesis Toolbox -- Supplement
$ S9 e( T. S9 x/ g" Htoolbox/ncd          -  Nonlinear Control Design Toolbox.
nnet/nnet            -  Neural Network Toolbox.
+ L. K4 S0 `" Fnnet/nndemos         -  Neural Network Demonstrations and Applications.
1 @# W. w0 z# `6 k9 utoolbox/optim        -  Optimization Toolbox.
toolbox/robust       -  Robust Control Toolbox.
toolbox/signal       -  Signal Processing Toolbox.
- v# Q* G  n9 E# I1 Z9 rtoolbox/splines      -  Spline Toolbox.
" a6 K4 x. j7 u2 a  z& [toolbox/stats        -  Statistics Toolbox.
) u3 x. J* u9 utoolbox/symbolic     -  Symbolic Math Toolbox.
# L1 D5 I* d% M  S5 w) Etoolbox/wavbox       - (No table of contents file)
9 Z& W6 ]9 r3 {3 x! D* Dsimulink/simulink    -  SIMULINK model analysis and construction functions.
simulink/blocks      -  SIMULINK block library.
simulink/simdemos    -  SIMULINK demonstrations and samples.
toolbox/codegen      -  Real-Time Workshop
! @8 {5 ~3 |' r1 K" `
+ D1 s' p$ j; }  T: R$ P: G% z$ o. d8 |For more help on directory/topic, type "help topic".

晓夜寒风

>> help elmat

8 A0 E9 F6 C, v# s$ p( r9 [- v Elementary matrices and matrix manipulation.

Elementary matrices.
+ x, J5 c( |. z) g6 z7 I  ^1 a; I; {   zeros       - Zeros matrix.
   ones        - Ones matrix.
- F: L1 x) U+ B7 A; j2 A- ?! c   eye         - Identity matrix.
   rand        - Uniformly distributed random numbers.
% J; ^$ }5 u$ X5 T: W6 i# h& \. A   randn       - Normally distributed random numbers.
; _% U: X' P* Y. x- i9 k" N: ?% X   linspace    - Linearly spaced vector.
, f  w+ z' @- L" ?) T  k- Q   logspace    - Logarithmically spaced vector.
8 C8 G0 i& l5 @" q3 P& y; b   meshgrid    - X and Y arrays for 3-D plots.
   :           - Regularly spaced vector.
: }8 ~6 g# f1 R& R  j
" h) Q2 E, }+ q- t1 P% D. g Special variables and constants.
3 t1 j1 _% b. r1 U( T( ?* M) L  ]   ans         - Most recent answer.
' c' p1 j' l; C3 C" M6 z   eps         - Floating point relative accuracy.
   realmax     - Largest floating point number.
   realmin     - Smallest positive floating point number.
+ H/ F' ?  \2 F; p( ^" h8 @# H   pi          - 3.1415926535897....
$ F1 ?6 {' n! k7 r/ B   i, j        - Imaginary unit.
   inf         - Infinity.
   NaN         - Not-a-Number.
   flops       - Count of floating point operations.
) B2 U9 E+ y5 P$ F5 b4 f1 z: x   nargin      - Number of function input arguments.
   nargout     - Number of function output arguments.
. \5 R* C" h3 D) |/ f   computer    - Computer type.
   isieee      - True for computers with IEEE arithmetic.
" }* I4 {0 T% x" M   isstudent   - True for the Student Edition.
   why         - Succinct answer.
   version     - MATLAB version number.
" ?3 J7 f# C6 ~# v
6 Z  o" t9 C9 \9 } Time and dates.
   clock       - Wall clock.
+ R; S' i! ^6 V* t1 X- O   cputime     - Elapsed CPU time.
   date        - Calendar.
  W" ^3 c. \" o" e   etime       - Elapsed time function.
( @' f, ?, n& d" ~, W   tic, toc    - Stopwatch timer functions.
- S3 N0 w7 l/ a! `7 r6 T
Matrix manipulation.
9 `8 H* o3 ]7 q+ \3 F. C3 z   diag        - Create or extract diagonals.
   fliplr      - Flip matrix in the left/right direction.
4 h+ n! b( h+ ~! K1 I   flipud      - Flip matrix in the up/down direction.
   reshape     - Change size.
   rot90       - Rotate matrix 90 degrees.
9 Q7 [9 s7 b* ~) k% @8 {. k   tril        - Extract lower triangular part.
" i; m! X: z3 a2 f8 x   triu        - Extract upper triangular part.
   :           - Index into matrix, rearrange matrix.

晓夜寒风

>> help specmat

Specialized matrices.
( S1 B. u* R# h0 {
   compan      - Companion matrix.
/ G$ c, y3 I# G6 V: h   gallery     - Several small test matrices.
! [+ R& K& D5 K6 G" r' M   hadamard    - Hadamard matrix.
   hankel      - Hankel matrix.
   hilb        - Hilbert matrix.
  v0 [/ R! [6 ?; t4 F. |   invhilb     - Inverse Hilbert matrix.
   kron        - Kronecker tensor product.
/ o* T2 `, m* e% j   magic       - Magic square.
   pascal      - Pascal matrix.
   rosser      - Classic symmetric eigenvalue test problem.
; R- N: c0 x/ J, o" q" r) L   toeplitz    - Toeplitz matrix.
! e- |! D( M* ~# G5 ]   vander      - Vandermonde matrix.
   wilkinson   - Wilkinson's eigenvalue test matrix.


/ Q* r! l/ z* q( v>> help elfun
( j! l* {$ u# s0 X
0 B5 n9 z, z2 u# g1 ~) p' { Elementary math functions.

, r8 ?2 }/ D9 K& J+ X# ~# } Trigonometric.
, E" r9 [7 S& d/ _2 e, D   sin         - Sine.
   sinh        - Hyperbolic sine.
   asin        - Inverse sine.
. _3 v, c/ S7 w! w3 z   asinh       - Inverse hyperbolic sine.
   cos         - Cosine.
   cosh        - Hyperbolic cosine.
   acos        - Inverse cosine.
" L( p& p9 w' j0 {% _   acosh       - Inverse hyperbolic cosine.
   tan         - Tangent.
! B  _1 n7 C. ]# ~! {* r( ?( N   tanh        - Hyperbolic tangent.
   atan        - Inverse tangent.
. h7 [5 H, h1 b   atan2       - Four quadrant inverse tangent.
; n0 U; C, ?4 {   atanh       - Inverse hyperbolic tangent.
   sec         - Secant.
   sech        - Hyperbolic secant.
) R: G+ F8 F: l: X; N5 f   asec        - Inverse secant.
   asech       - Inverse hyperbolic secant.
   csc         - Cosecant.
   csch        - Hyperbolic cosecant.
) D2 Y4 A  G4 N7 n! I9 f- ~   acsc        - Inverse cosecant.
7 t* f- v( ~/ y- H   acsch       - Inverse hyperbolic cosecant.
   cot         - Cotangent.
0 u, r& u: L9 J+ ~   coth        - Hyperbolic cotangent.
- g% g6 y" m7 B   acot        - Inverse cotangent.
   acoth       - Inverse hyperbolic cotangent.
7 Z# J! `1 z0 ]' z
Exponential.
+ ?9 b2 r3 a' h% g! G   exp         - Exponential.
9 b- [; V- v% t! o& k0 i+ g  T   log         - Natural logarithm.
   log10       - Common logarithm.
   sqrt        - Square root.

Complex.
   abs         - Absolute value.
( p; v' j1 Q& w- F   angle       - Phase angle.
   conj        - Complex conjugate.
   imag        - Complex imaginary part.
   real        - Complex real part.
6 G0 U3 Y4 q7 j- t( V- M
Numeric.
   fix         - Round towards zero.
   floor       - Round towards minus infinity.
5 s' Z4 _# |# S5 [7 M   ceil        - Round towards plus infinity.
   round       - Round towards nearest integer.
   rem         - Remainder after division.
3 b6 q3 ^* v) B8 [; O2 N   sign        - Signum function.


/ w' @* E( W4 o5 Z3 _- E) n) t4 K>> help specfun

晓夜寒风

>> help specmat

Specialized matrices.

   compan      - Companion matrix.
   gallery     - Several small test matrices.
. P% J" g, x& R1 }! Y7 ?# r   hadamard    - Hadamard matrix.
7 r* j" T( O5 ^# y5 U% q% v   hankel      - Hankel matrix.
/ I8 O; U2 l, m! V2 {  u" G% b   hilb        - Hilbert matrix.
% j7 T9 ]8 S+ j" L   invhilb     - Inverse Hilbert matrix.
( A$ `2 |, {  N/ o% X, h$ u   kron        - Kronecker tensor product.
9 u+ G# u9 I8 i/ d2 b- J' Z   magic       - Magic square.
; K3 l, \4 g9 p2 ]9 _* @   pascal      - Pascal matrix.
   rosser      - Classic symmetric eigenvalue test problem.
: D  f4 z* F* R( _   toeplitz    - Toeplitz matrix.
. B" U7 ]0 T  r$ ^; d3 w! f   vander      - Vandermonde matrix.
, R+ X7 i. `5 y   wilkinson   - Wilkinson's eigenvalue test matrix.

+ Z% h, G) |, T' n) d
>> help elfun
# b; g+ |# _+ [" u
3 A3 v; D& @- X, e/ ^2 k( S Elementary math functions.

" b6 c- G) @' T3 r Trigonometric.
   sin         - Sine.
   sinh        - Hyperbolic sine.
   asin        - Inverse sine.
   asinh       - Inverse hyperbolic sine.
& _$ R5 p, {* h5 {1 O  z   cos         - Cosine.
   cosh        - Hyperbolic cosine.
+ `: v5 \4 @5 }6 p   acos        - Inverse cosine.
; F0 J+ O4 s+ h+ K/ }. h   acosh       - Inverse hyperbolic cosine.
; O2 k% b' @2 t" f: E# c+ \   tan         - Tangent.
   tanh        - Hyperbolic tangent.
$ I) @  l3 c0 M$ f( k* B- N& A1 s   atan        - Inverse tangent.
   atan2       - Four quadrant inverse tangent.
   atanh       - Inverse hyperbolic tangent.
   sec         - Secant.
   sech        - Hyperbolic secant.
% t! }/ E  N9 M; W/ n7 T0 v8 h  Y   asec        - Inverse secant.
  Q& H- I1 b0 y# r   asech       - Inverse hyperbolic secant.
! K* U4 d, X2 @' e# B! \+ }   csc         - Cosecant.
   csch        - Hyperbolic cosecant.
; Q2 ~, c5 O8 b2 a7 F   acsc        - Inverse cosecant.
   acsch       - Inverse hyperbolic cosecant.
* a6 N& t! b- ~* i* h/ a- r" m   cot         - Cotangent.
   coth        - Hyperbolic cotangent.
   acot        - Inverse cotangent.
   acoth       - Inverse hyperbolic cotangent.
' K5 e! Q/ m# X3 O' s# A( ~
$ d; n- j$ M! r( { Exponential.
   exp         - Exponential.
0 m/ `  O8 r8 b3 J' ^$ F: l5 G   log         - Natural logarithm.
$ H8 B: ]% x& C. N5 o) t   log10       - Common logarithm.
   sqrt        - Square root.

$ |- Z! L1 }. }! d9 H1 @0 Q( F" E$ t Complex.
* C8 o3 @) ?6 b% e) k   abs         - Absolute value.
: b1 T5 r& E8 n9 D   angle       - Phase angle.
. Q% I4 h) ~3 t- r6 w% B   conj        - Complex conjugate.
   imag        - Complex imaginary part.
  p) D: q7 E9 s' J   real        - Complex real part.

: {& x7 q2 I1 Z' y Numeric.
0 X! W" {$ z: ?, G; K( W7 n   fix         - Round towards zero.
% n+ @' ^. u* ]3 E   floor       - Round towards minus infinity.
3 g/ |- n3 v& q* r7 i2 V$ Q+ s   ceil        - Round towards plus infinity.
# _3 ?! @/ v9 Y/ z. Q   round       - Round towards nearest integer.
/ C% h/ I6 ^" S5 u$ x+ r   rem         - Remainder after division.
   sign        - Signum function.

5 _9 U2 g3 {% U, {/ s
' k3 ~5 [: f" D$ I- o>> help specfun

晓夜寒风

Specialized math functions.

   besselj     - Bessel function of the first kind.
   bessely     - Bessel function of the second kind.
- h0 [) ^  h# L( X' L9 s   besseli     - Modified Bessel function of the first kind.
   besselk     - Modified Bessel function of the second kind.
2 i2 z4 R$ [8 H   beta        - Beta function.
   betainc     - Incomplete beta function.
2 w. R# l" I, r- w: H  H, L   betaln      - Logarithm of beta function.
   elli石皮解      - Jacobi elliptic functions.
* `7 o9 [  y, }! A- B- }% [% D   ellipke     - Complete elliptic integral.
   erf         - Error function.
   erfc        - Complementary error function.
   erfcx       - Scaled complementary error function.
   erfinv      - Inverse error function.
   expint      - Exponential integral function.
   gamma       - Gamma function.
9 j% f1 _4 r  Z6 ?- l8 Q8 X& ^$ u   gcd         - Greatest common divisor.
, d  M4 H9 L' y( H7 s( S/ P# f   gammainc    - Incomplete gamma function.
" W  M4 Q: [) o, K1 _9 ^   lcm         - Least common multiple.
* I* g9 v+ _2 T3 K' [+ i   legendre    - Associated Legendre function.
: s' u- l9 v$ O4 n: V8 X. v   gammaln     - Logarithm of gamma function.
   log2        - Dissect floating point numbers.
   pow2        - Scale floating point numbers.
4 {5 E4 T2 `- k# f  |; ], _   rat         - Rational approximation.
) j9 Q  G" s1 K/ F: d4 ?) M   rats        - Rational output.
, a. G( I  c5 b' t: g+ y   cart2sph    - Transform from Cartesian to spherical coordinates.
   cart2pol    - Transform from Cartesian to polar coordinates.
8 N' X+ I* n/ A" o2 ^   pol2cart    - Transform from polar to Cartesian coordinates.
+ @# _# n3 x8 c2 E& |5 V" Z   sph2cart    - Transform from spherical to Cartesian coordinates.
; j1 l0 X0 L) q  |% s
+ O4 X, W5 H+ d* I
8 |5 h  b, p; [>> help matfun
6 F" h& w7 [, N& g! B
0 B" l" |8 ~, M9 I7 `, e0 m7 O1 ? Matrix functions - numerical linear algebra.

% m- L3 @( M% C# ` Matrix analysis.
/ l& r- q; u- u0 o1 C  @/ p: I   cond        - Matrix condition number.
7 H9 l% U: Y8 H; _& u, ?: K0 k   norm        - Matrix or vector norm.
# {; ^. t( F( T9 Z' F7 Z   rcond       - LINPACK reciprocal condition estimator.
   rank        - Number of linearly independent rows or columns.
$ X" @1 m6 w$ h( u! ~" z   det         - Determinant.
   trace       - Sum of diagonal elements.
   null        - Null space.
$ S+ H/ k: G$ x' q6 w   orth        - Orthogonalization.
   rref        - Reduced row echelon form.
8 C& k# c# D& c- k9 ^0 ?( |5 T
$ m2 X/ k+ L/ f# i5 e Linear equations.
   \ and /     - Linear equation solution; use "help slash".
/ `  B7 q+ X$ f9 ~   chol        - Cholesky factorization.
: h* ~! E4 B2 J3 n   lu          - Factors from Gaussian elimination.
  y3 G5 i0 i5 O4 g& _( T3 p& |) h6 b   inv         - Matrix inverse.
) o  W% K. H. O- U2 n. z; P( c4 L( ?9 Q   qr          - Orthogonal-triangular decomposition.
   qrdelete    - Delete a column from the QR factorization.
3 Z+ x0 a" c% u/ e+ k  z* ?   qrinsert    - Insert a column in the QR factorization.
0 U& v: [# ?3 k, D7 S6 W* T   nnls        - Non-negative least-squares.
5 |' R3 V8 h" I4 E+ y   pinv        - Pseudoinverse.
   lscov       - Least squares in the presence of known covariance.

Eigenvalues and singular values.
' U+ Z" |2 l! x/ U   eig         - Eigenvalues and eigenvectors.
   poly        - Characteristic polynomial.
" H9 ^8 L# }/ d- {/ U& p9 T# _. |   polyeig     - Polynomial eigenvalue problem.
   hess        - Hessenberg form.
. H! J# M2 P: d9 t   qz          - Generalized eigenvalues.
   rsf2csf     - Real block diagonal form to complex diagonal form.
   cdf2rdf     - Complex diagonal form to real block diagonal form.
: o- t6 M% g9 k' p% d: e   schur       - Schur decomposition.
* I/ f- A; s. v4 K8 @; `   balance     - Diagonal scaling to improve eigenvalue accuracy.
   svd         - Singular value decomposition.

Matrix functions.
   expm        - Matrix exponential.
   expm1       - M-file implementation of expm.
  _8 S4 ^% u! v( X: T( N   expm2       - Matrix exponential via Taylor series.
, X$ `1 i2 q5 J1 b   expm3       - Matrix exponential via eigenvalues and eigenvectors.
   logm        - Matrix logarithm.
   sqrtm       - Matrix square root.
+ J0 L+ M. b! `9 N: H0 Q   funm        - Evaluate general matrix function.

晓夜寒风

>> help general

0 V/ w1 U! M$ p6 j; A8 Z4 W General purpose commands.
MATLAB Toolbox  Version 4.2a 25-Jul-94
& A: c+ G7 E3 J1 K# P
Managing commands and functions.
/ {' ?+ r8 h& Q6 N   help        - On-line documentation.
  g2 m6 r% R2 {- g" B! ]9 ]   doc         - Load hypertext documentation.
  o) t& r5 J( O% c% d6 N# [4 N   what        - Directory listing of M-, MAT- and MEX-files.
- y8 r! b  x/ i% I- W   type        - List M-file.
   lookfor     - Keyword search through the HELP entries.
   which       - Locate functions and files.
   demo        - Run demos.
9 ~. y# l  v2 c/ f' C' U( g   path        - Control MATLAB's search path.
4 o2 W! w* ]4 F* x& K# E1 H
Managing variables and the workspace.
   who         - List current variables.
3 r) G, t% t& n1 J4 f3 J2 p   whos        - List current variables, long form.
- k5 v. K3 H% y8 h   load        - Retrieve variables from disk.
   save        - Save workspace variables to disk.
   clear       - Clear variables and functions from memory.
   pack        - Consolidate workspace memory.
   size        - Size of matrix.
/ Y' \$ V4 o$ T' k; G9 R   length      - Length of vector.
   disp        - Display matrix or text.

Working with files and the operating system.
   cd          - Change current working directory.
9 `; i: h; H* m1 t   dir         - Directory listing.
   delete      - Delete file.
   getenv      - Get environment value.
% l) E1 S4 |1 E9 G. i7 `   !           - Execute operating system command.
   unix        - Execute operating system command & return result.
3 r$ X; L2 o" Y5 j# V: S* q: X   diary       - Save text of MATLAB session.

$ W6 Y$ G5 b  z% ~0 Z Controlling the command window.
0 y6 [7 A& r: @2 G   cedit       - Set command line edit/recall facility parameters.
   clc         - Clear command window.
7 b8 F  z/ P5 Z- L8 {$ s   home        - Send cursor home.
   format      - Set output format.
   echo        - Echo commands inside script files.
8 @* N: c& m! e; K' r: D$ Q# F( K   more        - Control paged output in command window.

# B; q2 ]$ G+ R2 K Starting and quitting from MATLAB.
   quit        - Terminate MATLAB.
8 Q. h7 _  l0 D0 L' E   startup     - M-file executed when MATLAB is invoked.
0 T8 {0 ~  |4 E' j; l   matlabrc    - Master startup M-file.
1 T  i, d: j3 b% u' ~# P+ i
0 p/ j3 L0 h" n+ m- }/ m General information.
   info        - Information about MATLAB and The MathWorks, Inc.
   subscribe   - Become subscribing user of MATLAB.
  c7 T) F# v0 u' A; }6 H6 o. [   hostid      - MATLAB server host identification number.
5 |1 b% l8 R3 x9 X8 w7 V, }& Z9 I7 e   whatsnew    - Information about new features not yet documented.
   ver         - MATLAB, SIMULINK, and TOOLBOX version information.

晓夜寒风

>> help general

7 f3 i% f1 C* C# c General purpose commands.
MATLAB Toolbox  Version 4.2a 25-Jul-94

: b' q  e: q5 i% l Managing commands and functions.
   help        - On-line documentation.
9 k, E6 U9 U5 |7 B' q   doc         - Load hypertext documentation.
   what        - Directory listing of M-, MAT- and MEX-files.
   type        - List M-file.
! ]; v# F" G" C: X   lookfor     - Keyword search through the HELP entries.
   which       - Locate functions and files.
9 s' D4 l$ Q* n- i# t   demo        - Run demos.
   path        - Control MATLAB's search path.
* r8 D" F( D+ F/ D
( q! `, q) ^& n# t* r# ^' U Managing variables and the workspace.
1 @0 w- I( x5 i7 s3 ~2 w6 l3 s   who         - List current variables.
   whos        - List current variables, long form.
   load        - Retrieve variables from disk.
   save        - Save workspace variables to disk.
4 X+ S/ N, g4 Y/ D$ T  `+ }   clear       - Clear variables and functions from memory.
$ [" @, b" K* W( `   pack        - Consolidate workspace memory.
   size        - Size of matrix.
) |* f" i' ?: p! s   length      - Length of vector.
   disp        - Display matrix or text.

Working with files and the operating system.
   cd          - Change current working directory.
   dir         - Directory listing.
+ p# h: l2 v+ q   delete      - Delete file.
, W3 P# Q. l. s6 v+ H$ z% i+ I/ D   getenv      - Get environment value.
   !           - Execute operating system command.
9 U5 M1 U1 B7 r9 ~! ^. }   unix        - Execute operating system command & return result.
   diary       - Save text of MATLAB session.
( `" l! R5 f: N- H
5 X+ c' g2 D2 \6 W& O Controlling the command window.
8 ^) Y8 s) o. I' H+ v6 Q   cedit       - Set command line edit/recall facility parameters.
   clc         - Clear command window.
; W8 `# |# n' X% \% X8 Q- I1 z1 t) z   home        - Send cursor home.
0 D+ H$ b' }0 w8 j5 H' L/ P' w' ~   format      - Set output format.
& |0 R) m7 N" y( t   echo        - Echo commands inside script files.
   more        - Control paged output in command window.
" C' g% m+ y0 Q* P: Y0 T
Starting and quitting from MATLAB.
   quit        - Terminate MATLAB.
   startup     - M-file executed when MATLAB is invoked.
   matlabrc    - Master startup M-file.

General information.
   info        - Information about MATLAB and The MathWorks, Inc.
   subscribe   - Become subscribing user of MATLAB.
( W) t; q/ n4 n! L   hostid      - MATLAB server host identification number.
1 u- F7 c! Y1 X+ X" e   whatsnew    - Information about new features not yet documented.
8 M" S: X8 {# }2 D2 a   ver         - MATLAB, SIMULINK, and TOOLBOX version information.

晓夜寒风

>> help funfun
+ v0 ]1 n' v9 z$ V$ r7 ]' D
Function functions - nonlinear numerical methods.

   ode23       - Solve differential equations, low order method.
& v( z  a+ S" {, I+ r   ode23p      - Solve and plot solutions.
   ode45       - Solve differential equations, high order method.
2 g7 ~2 M& ]/ k: t) X   quad        - Numerically evaluate integral, low order method.
0 r, F1 R' l3 L& Y   quad8       - Numerically evaluate integral, high order method.
   fmin        - Minimize function of one variable.
   fmins       - Minimize function of several variables.
* L3 U. N0 W* Q% n   fzero       - Find zero of function of one variable.
   fplot       - Plot function.

See also The Optimization Toolbox, which has a comprehensive
' A6 f9 I. I# _* d# Z: X set of function functions for optimizing and minimizing functions.

晓夜寒风

>> help funfun

Function functions - nonlinear numerical methods.

. Q: c# r6 s& G; c4 V& r   ode23       - Solve differential equations, low order method.
/ _& J% |; Y8 b) x* |   ode23p      - Solve and plot solutions.
8 Y9 W" w* E$ n4 W3 N& j" `   ode45       - Solve differential equations, high order method.
: Z% B6 T) H0 |1 K* h1 X$ f   quad        - Numerically evaluate integral, low order method.
- \0 @3 P; g# `3 }( Z  X   quad8       - Numerically evaluate integral, high order method.
# `0 q5 `5 l5 ^: b- j, L/ j: ~   fmin        - Minimize function of one variable.
2 d9 G! G9 d3 q7 r3 J   fmins       - Minimize function of several variables.
   fzero       - Find zero of function of one variable.
6 j5 v9 i+ g! R6 g   fplot       - Plot function.
) B8 L( Y, K% A/ @/ S- G6 S1 h
# [/ \# T8 h# b, B See also The Optimization Toolbox, which has a comprehensive
set of function functions for optimizing and minimizing functions.