Matlab入门（英文）

晓夜寒风

Some MATLAB function descriptions
0 i  F- [6 _9 ?  z2 p" _# @2 SThese 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.
  M: E- N8 o1 @9 R* T7 i
/ f8 X+ q5 A" U>> help

晓夜寒风

HELP topics:

% z  r5 f5 L2 J! c6 M9 h+ R* p' gmatlab/general       -  General purpose commands.
0 q6 ^) t* A: G: l2 e. Qmatlab/ops           -  Operators and special characters.
matlab/lang          -  Language constructs and debugging.
6 J) d3 X( [/ l! F% q3 z3 J: Rmatlab/elmat         -  Elementary matrices and matrix manipulation.
# g% H/ v; U  {- t, v1 [matlab/specmat       -  Specialized matrices.
1 h# Y: u9 P# L, mmatlab/elfun         -  Elementary math functions.
5 Q7 Y2 q8 o7 p/ L1 W; Jmatlab/specfun       -  Specialized math functions.
matlab/matfun        -  Matrix functions - numerical linear algebra.
matlab/datafun       -  Data analysis and Fourier transform functions.
matlab/polyfun       -  Polynomial and interpolation functions.
) |8 ?: v! ~5 ?6 M3 gmatlab/funfun        -  Function functions - nonlinear numerical methods.
matlab/sparfun       -  Sparse matrix functions.
" m8 J# r3 X( S. d1 Bmatlab/plotxy        -  Two dimensional graphics.
7 j3 [7 P6 E: L' n3 |matlab/plotxyz       -  Three dimensional graphics.
matlab/graphics      -  General purpose graphics functions.
matlab/color         -  Color control and lighting model functions.
matlab/sounds        -  Sound processing functions.
  L, F0 O1 Q6 l  X6 d& xmatlab/strfun        -  Character string functions.
matlab/iofun         -  Low-level file I/O functions.
* N) r( D6 |6 {5 V. W, rmatlab/demos         -  The MATLAB Expo and other demonstrations.
' s9 ?. |* F; m2 t- }2 I9 M* \toolbox/chem         -  Chemometrics Toolbox
; Q) I6 N) E1 n2 X0 ~. atoolbox/control      -  Control System Toolbox.
# }7 E% \3 t" o) O# qfdident/fdident      -  Frequency Domain System Identification Toolbox
fdident/fddemos      -  Demonstrations for the FDIDENT Toolbox
toolbox/hispec       -  Hi-Spec Toolbox
toolbox/ident        -  System Identification Toolbox.
  |0 C  ?- ?( X! Ptoolbox/images       -  Image Processing Toolbox.
, B3 ~3 j8 W& Z" k" H9 Vtoolbox/local        -  Local function library.
4 _3 }! R5 k1 {9 G' [toolbox/mmle3        -  MMLE3 Identification Toolbox.
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
toolbox/ncd          -  Nonlinear Control Design Toolbox.
; J% ]( L& a' n7 w7 i0 fnnet/nnet            -  Neural Network Toolbox.
( W9 R4 `3 e/ K9 ~, rnnet/nndemos         -  Neural Network Demonstrations and Applications.
; a7 K6 d5 ?4 z# }2 ]9 A- o& W( \toolbox/optim        -  Optimization Toolbox.
toolbox/robust       -  Robust Control Toolbox.
toolbox/signal       -  Signal Processing Toolbox.
" Y8 e! G2 E2 Htoolbox/splines      -  Spline Toolbox.
- \  o! Q+ S4 _% w. c8 a# @toolbox/stats        -  Statistics Toolbox.
8 G! b% c& @, N8 i' W8 Dtoolbox/symbolic     -  Symbolic Math Toolbox.
- B6 i' t$ e/ D( x  _! Itoolbox/wavbox       - (No table of contents file)
- C4 R! w2 U! {0 F+ zsimulink/simulink    -  SIMULINK model analysis and construction functions.
simulink/blocks      -  SIMULINK block library.
5 w. ^2 T' _: e' Z- x- F4 ~! S$ ^: asimulink/simdemos    -  SIMULINK demonstrations and samples.
; M0 F- J, a1 y0 @4 z, m# H: T1 Itoolbox/codegen      -  Real-Time Workshop
# ]2 _# i8 O8 a! B
For more help on directory/topic, type "help topic".

晓夜寒风

>> help elmat
8 Z$ Y4 r6 M7 w$ L( h/ ?
Elementary matrices and matrix manipulation.
) @3 N1 J4 j2 e! t) L
* F) Z. L7 r/ _6 i  w: ~6 h Elementary matrices.
7 ~' ~4 k/ }$ H$ j   zeros       - Zeros matrix.
! u" h. K% R3 |: s   ones        - Ones matrix.
   eye         - Identity matrix.
   rand        - Uniformly distributed random numbers.
   randn       - Normally distributed random numbers.
$ v$ I/ F; f) ?- y% F   linspace    - Linearly spaced vector.
   logspace    - Logarithmically spaced vector.
% ?5 L# s, ~( W  X1 ?: X   meshgrid    - X and Y arrays for 3-D plots.
   :           - Regularly spaced vector.

0 c8 f( ]' ?* c+ b( O$ T3 x& F Special variables and constants.
5 k( M: T/ r8 {3 G2 t# L" s/ c! i   ans         - Most recent answer.
& I0 E5 _  {$ D3 H0 `* I0 c/ S   eps         - Floating point relative accuracy.
   realmax     - Largest floating point number.
$ J6 \+ z! H0 i7 Y. Q; I; K: z   realmin     - Smallest positive floating point number.
" w# K% K- [1 j& E5 ?+ J5 r   pi          - 3.1415926535897....
   i, j        - Imaginary unit.
$ X; o! ^: k5 ^% M   inf         - Infinity.
   NaN         - Not-a-Number.
/ K' F4 x3 @8 `5 s: i& {- u  d   flops       - Count of floating point operations.
) U  v, s  ~' }% u- P; H/ f2 Z5 z   nargin      - Number of function input arguments.
& T0 {+ \" N/ q' n, `   nargout     - Number of function output arguments.
  }6 \/ F' x! j- t4 @! t- k% e! J   computer    - Computer type.
, `6 L2 B3 {/ P" T3 G   isieee      - True for computers with IEEE arithmetic.
   isstudent   - True for the Student Edition.
   why         - Succinct answer.
: u; x- S  \8 n7 }& l   version     - MATLAB version number.
+ J3 Z* \. P0 @5 w6 m
: _  G5 H& c3 T& b2 b Time and dates.
   clock       - Wall clock.
% |+ u! v% {3 k, F& R8 X- p   cputime     - Elapsed CPU time.
0 i% P+ A/ }; }   date        - Calendar.
   etime       - Elapsed time function.
5 s( l: Y5 u9 [9 a3 N, ?* C   tic, toc    - Stopwatch timer functions.

Matrix manipulation.
   diag        - Create or extract diagonals.
& O- ]) x3 c7 I) k   fliplr      - Flip matrix in the left/right direction.
   flipud      - Flip matrix in the up/down direction.
9 K  q- \" B7 `2 B6 ]' U! a   reshape     - Change size.
/ b& C3 T( V; M* b* ?" a   rot90       - Rotate matrix 90 degrees.
   tril        - Extract lower triangular part.
$ y( `* {7 ^2 ^" f' e$ J1 o   triu        - Extract upper triangular part.
4 P3 W3 }4 C" t  T2 d) x& q   :           - Index into matrix, rearrange matrix.

晓夜寒风

>> help specmat
! l4 @% @' Y5 I. v7 d0 _! D6 U2 J
Specialized matrices.

   compan      - Companion matrix.
   gallery     - Several small test matrices.
   hadamard    - Hadamard matrix.
. \* E3 [& I- r1 ^5 Z! s* N% H   hankel      - Hankel matrix.
/ O9 J% a  ?2 \$ X3 h. d. r4 M   hilb        - Hilbert matrix.
4 I2 h# D" s8 H( S8 L+ B3 U   invhilb     - Inverse Hilbert matrix.
1 `" Z+ j) v6 f! u   kron        - Kronecker tensor product.
   magic       - Magic square.
% R& b4 h+ X; Z2 v# j1 T0 E, _0 v* a6 w   pascal      - Pascal matrix.
% W5 W2 b+ e9 x   rosser      - Classic symmetric eigenvalue test problem.
# M% r, W+ c5 q& ~, y- j2 Z   toeplitz    - Toeplitz matrix.
4 S& Z# b- z4 k: C4 p* F0 j3 H- O' @   vander      - Vandermonde matrix.
   wilkinson   - Wilkinson's eigenvalue test matrix.
5 D6 a+ y/ R7 c/ g2 B

>> help elfun
: @% G4 t; y4 C9 v0 p+ p( l
Elementary math functions.

Trigonometric.
   sin         - Sine.
   sinh        - Hyperbolic sine.
6 ?) R2 U2 l* r, E2 S& ~1 C2 D" G   asin        - Inverse sine.
! \, u7 V, {. T5 c! H   asinh       - Inverse hyperbolic sine.
   cos         - Cosine.
) a- n- y: g0 N! z$ W   cosh        - Hyperbolic cosine.
1 j6 e- @$ P5 b/ L. ~   acos        - Inverse cosine.
4 f8 U) p, q7 Y8 l& a! E   acosh       - Inverse hyperbolic cosine.
   tan         - Tangent.
/ B' o1 T6 {. U6 T4 y   tanh        - Hyperbolic tangent.
7 H  r) O$ V4 }* _# Q   atan        - Inverse tangent.
   atan2       - Four quadrant inverse tangent.
   atanh       - Inverse hyperbolic tangent.
   sec         - Secant.
   sech        - Hyperbolic secant.
" I$ W- l! ~' V* T/ Y8 n: f   asec        - Inverse secant.
   asech       - Inverse hyperbolic secant.
   csc         - Cosecant.
   csch        - Hyperbolic cosecant.
2 |, ?+ |* p) e; H/ W   acsc        - Inverse cosecant.
% ^1 j) w  L; o+ a. H; ?   acsch       - Inverse hyperbolic cosecant.
   cot         - Cotangent.
   coth        - Hyperbolic cotangent.
   acot        - Inverse cotangent.
   acoth       - Inverse hyperbolic cotangent.

Exponential.
9 w3 Y3 N* S+ o6 n! T- \   exp         - Exponential.
   log         - Natural logarithm.
   log10       - Common logarithm.
' o# K& A6 y; i6 o0 f   sqrt        - Square root.
( t( e8 i: K8 [* k
Complex.
   abs         - Absolute value.
" C' s/ a* f1 A- x2 _6 {/ G   angle       - Phase angle.
   conj        - Complex conjugate.
   imag        - Complex imaginary part.
   real        - Complex real part.
! s+ N9 M, ?9 ^7 ~% _7 C- i$ C0 d
9 d5 X+ E. w* R+ p" r Numeric.
   fix         - Round towards zero.
$ S) w( v: X, e6 h   floor       - Round towards minus infinity.
   ceil        - Round towards plus infinity.
   round       - Round towards nearest integer.
   rem         - Remainder after division.
   sign        - Signum function.


>> help specfun

晓夜寒风

>> help specmat

Specialized matrices.

   compan      - Companion matrix.
2 R1 k) @2 a2 O. w( s   gallery     - Several small test matrices.
" P& Y& |/ K- B8 |# Z- W6 T: s' ~   hadamard    - Hadamard matrix.
4 n+ l% e' N6 Z5 F6 m   hankel      - Hankel matrix.
   hilb        - Hilbert matrix.
   invhilb     - Inverse Hilbert matrix.
   kron        - Kronecker tensor product.
   magic       - Magic square.
   pascal      - Pascal matrix.
5 Y3 f  J2 w* c  w+ y# Q. j. x" j+ r   rosser      - Classic symmetric eigenvalue test problem.
$ r0 W1 [# s, }  u1 _4 g4 ~   toeplitz    - Toeplitz matrix.
   vander      - Vandermonde matrix.
   wilkinson   - Wilkinson's eigenvalue test matrix.


' \2 m  n; b) c>> help elfun

Elementary math functions.
. y$ m5 x1 z% _; F1 O% A
7 \# t2 ?" K# z$ o# o' E6 N Trigonometric.
$ I4 b% o8 o; U  j   sin         - Sine.
5 L0 i8 O0 K4 i8 _6 t   sinh        - Hyperbolic sine.
4 W3 Y5 F9 w: P$ ]& K   asin        - Inverse sine.
   asinh       - Inverse hyperbolic sine.
   cos         - Cosine.
; O% C' d1 O5 s" r' b( i0 D% J0 E; O& \   cosh        - Hyperbolic cosine.
3 d$ B9 z+ {2 ~: e5 M9 i   acos        - Inverse cosine.
# u: O" e: W" U( K. ^   acosh       - Inverse hyperbolic cosine.
   tan         - Tangent.
2 X- W8 J) d8 H( u   tanh        - Hyperbolic tangent.
   atan        - Inverse tangent.
   atan2       - Four quadrant inverse tangent.
# T$ S8 }; j- J4 V, f   atanh       - Inverse hyperbolic tangent.
* R* |6 q8 P( }3 q, t   sec         - Secant.
2 M# G5 o0 Q% |/ l' v   sech        - Hyperbolic secant.
   asec        - Inverse secant.
' P6 q1 r% c+ K# S   asech       - Inverse hyperbolic secant.
7 \0 g! w8 T6 Y- M5 {& G2 L   csc         - Cosecant.
7 o% I6 C2 s3 w   csch        - Hyperbolic cosecant.
- w# }: d+ S0 P/ }3 l   acsc        - Inverse cosecant.
6 s. f* {# W2 p2 O   acsch       - Inverse hyperbolic cosecant.
, O8 B$ V+ W% `: {   cot         - Cotangent.
   coth        - Hyperbolic cotangent.
   acot        - Inverse cotangent.
   acoth       - Inverse hyperbolic cotangent.

Exponential.
   exp         - Exponential.
! P8 p1 w1 ?' P  J- e+ l   log         - Natural logarithm.
9 Z% W' k9 D8 D& k# H) G' m, Y8 w   log10       - Common logarithm.
6 U$ q; D$ y) b, V+ A8 i/ e4 [/ s( `   sqrt        - Square root.
1 b0 S8 ^/ A# M. Q
$ p: o: D3 B  v( E  g Complex.
4 C" _" c, u) J   abs         - Absolute value.
   angle       - Phase angle.
3 i- i- ]& c: _$ f$ `1 V   conj        - Complex conjugate.
' d. e( t" ?8 u( U8 S* o8 e( Y% F   imag        - Complex imaginary part.
   real        - Complex real part.

Numeric.
   fix         - Round towards zero.
3 M6 p: b3 C. e9 o& m& ^* O# b   floor       - Round towards minus infinity.
3 P* ]7 y1 b, G: k   ceil        - Round towards plus infinity.
" n( @, G0 ?. z  A8 H2 a   round       - Round towards nearest integer.
   rem         - Remainder after division.
   sign        - Signum function.

8 s" A" f# ]* }5 C) }9 ]( F9 f
6 P( J, d/ G3 j8 |- a' t6 v>> help specfun

晓夜寒风

Specialized math functions.

( C; q; D, w% w1 L7 ?+ \% H   besselj     - Bessel function of the first kind.
: g9 G' @& O: {, `- M" b5 U( q   bessely     - Bessel function of the second kind.
   besseli     - Modified Bessel function of the first kind.
' g5 R2 k5 i( F   besselk     - Modified Bessel function of the second kind.
! D( m" |. _( e) S% }* h3 m   beta        - Beta function.
: H  x' L* k- z   betainc     - Incomplete beta function.
   betaln      - Logarithm of beta function.
   elli石皮解      - Jacobi elliptic functions.
: ]0 X6 J) W7 |: K4 j   ellipke     - Complete elliptic integral.
   erf         - Error function.
- o3 r9 Z/ ?9 F" W3 B   erfc        - Complementary error function.
& i2 q1 l& {+ I5 \! @' a& I   erfcx       - Scaled complementary error function.
: |; h/ f6 x) a2 ~. @   erfinv      - Inverse error function.
   expint      - Exponential integral function.
   gamma       - Gamma function.
   gcd         - Greatest common divisor.
. J/ V( ?9 N- ~0 B- ~/ k: ^* F   gammainc    - Incomplete gamma function.
   lcm         - Least common multiple.
   legendre    - Associated Legendre function.
  ~4 z6 k# S  |8 J   gammaln     - Logarithm of gamma function.
   log2        - Dissect floating point numbers.
( U' L% q) f+ O7 U" A6 O6 G; c   pow2        - Scale floating point numbers.
5 N/ g4 P! ^$ Y1 r9 i- S   rat         - Rational approximation.
   rats        - Rational output.
, M& p, R* ^6 Q; A% u" Y   cart2sph    - Transform from Cartesian to spherical coordinates.
   cart2pol    - Transform from Cartesian to polar coordinates.
6 A( c- p% n! C7 s. ~3 T   pol2cart    - Transform from polar to Cartesian coordinates.
  z( {$ Q; W& M   sph2cart    - Transform from spherical to Cartesian coordinates.
) C, n" d- E8 a+ l2 @- |

>> help matfun

Matrix functions - numerical linear algebra.
/ O) E! ^; E  R$ p6 e  V6 Q
( B0 g5 u" X. T0 L0 M  \) ], i, E5 g Matrix analysis.
6 L1 h3 W4 H; B: O, {   cond        - Matrix condition number.
1 i2 I% ^& w2 z) a+ I1 Y% ~0 u0 L! g7 V   norm        - Matrix or vector norm.
   rcond       - LINPACK reciprocal condition estimator.
0 E# E" F, D3 _   rank        - Number of linearly independent rows or columns.
   det         - Determinant.
   trace       - Sum of diagonal elements.
  E- e+ K1 l, Y$ ^/ N" U* p   null        - Null space.
1 z, T- d6 z3 j  F* l* g3 W! ~   orth        - Orthogonalization.
- {( Z+ ^: r/ B& b2 J  o   rref        - Reduced row echelon form.
7 @1 B7 `9 w* U8 A
Linear equations.
8 X, W% a, J% }! i* p6 e   \ and /     - Linear equation solution; use "help slash".
. ~0 c* ]5 K, k6 t6 s   chol        - Cholesky factorization.
   lu          - Factors from Gaussian elimination.
   inv         - Matrix inverse.
   qr          - Orthogonal-triangular decomposition.
/ x( Q2 m0 N% l) u: H$ q   qrdelete    - Delete a column from the QR factorization.
   qrinsert    - Insert a column in the QR factorization.
& q  o7 o* }. O" M6 {   nnls        - Non-negative least-squares.
   pinv        - Pseudoinverse.
   lscov       - Least squares in the presence of known covariance.

Eigenvalues and singular values.
   eig         - Eigenvalues and eigenvectors.
   poly        - Characteristic polynomial.
   polyeig     - Polynomial eigenvalue problem.
   hess        - Hessenberg form.
   qz          - Generalized eigenvalues.
   rsf2csf     - Real block diagonal form to complex diagonal form.
  X3 L0 @6 w/ }. J   cdf2rdf     - Complex diagonal form to real block diagonal form.
   schur       - Schur decomposition.
   balance     - Diagonal scaling to improve eigenvalue accuracy.
   svd         - Singular value decomposition.

Matrix functions.
- v* |( A' L/ k   expm        - Matrix exponential.
5 w- h- a) p5 F$ i& K   expm1       - M-file implementation of expm.
  {& o8 g% M& e5 t+ y' `. B9 w   expm2       - Matrix exponential via Taylor series.
, C& U5 K$ X, v' R6 A" N   expm3       - Matrix exponential via eigenvalues and eigenvectors.
   logm        - Matrix logarithm.
   sqrtm       - Matrix square root.
* N: {2 S1 T; Y2 c1 {  M   funm        - Evaluate general matrix function.

晓夜寒风

>> help general

, m6 l1 J4 T6 h- \3 C General purpose commands.
MATLAB Toolbox  Version 4.2a 25-Jul-94

Managing commands and functions.
0 w, Z# r' F% G2 _9 L  A   help        - On-line documentation.
   doc         - Load hypertext documentation.
   what        - Directory listing of M-, MAT- and MEX-files.
  C0 k. F9 H! S3 m3 J4 Z   type        - List M-file.
   lookfor     - Keyword search through the HELP entries.
   which       - Locate functions and files.
   demo        - Run demos.
   path        - Control MATLAB's search path.

Managing variables and the workspace.
4 _& ^. B& [. ^4 V   who         - List current variables.
   whos        - List current variables, long form.
' @; M" p6 j' c. D5 M1 X   load        - Retrieve variables from disk.
& R6 ?# B3 ?% C6 u, v   save        - Save workspace variables to disk.
' g4 @, K* n: k) n   clear       - Clear variables and functions from memory.
   pack        - Consolidate workspace memory.
& {7 t7 d4 C+ l/ B, M   size        - Size of matrix.
. U0 @$ q: v* e) ~   length      - Length of vector.
   disp        - Display matrix or text.
2 \" V: Q! x: t- O2 G
* W& b; m) k+ r/ b. q+ o4 { Working with files and the operating system.
# ]) r9 K! C# f6 t5 ]# j/ l: g   cd          - Change current working directory.
$ a" O- k* d) {! X6 f5 H   dir         - Directory listing.
- |+ k! o. j5 t: B7 `4 i% t# \   delete      - Delete file.
$ V) k, \: `5 F1 E0 G$ v$ ]   getenv      - Get environment value.
   !           - Execute operating system command.
   unix        - Execute operating system command & return result.
& R! Y' s' Q  u7 P% s% q0 o# Z: E! A   diary       - Save text of MATLAB session.
! i: n) Y9 q1 G  u2 `
Controlling the command window.
5 G3 W9 h: |& j& }( t% p: k% a1 J   cedit       - Set command line edit/recall facility parameters.
   clc         - Clear command window.
   home        - Send cursor home.
   format      - Set output format.
   echo        - Echo commands inside script files.
2 _0 A: m6 V' ?& |& u: L1 H   more        - Control paged output in command window.

Starting and quitting from MATLAB.
   quit        - Terminate MATLAB.
, _6 R, d3 Z, w9 k. \" f$ A   startup     - M-file executed when MATLAB is invoked.
1 i  z' l5 }, q   matlabrc    - Master startup M-file.
8 l# u% |8 p4 b- }
General information.
   info        - Information about MATLAB and The MathWorks, Inc.
5 E: N. k! T; F* \$ V9 |   subscribe   - Become subscribing user of MATLAB.
   hostid      - MATLAB server host identification number.
   whatsnew    - Information about new features not yet documented.
   ver         - MATLAB, SIMULINK, and TOOLBOX version information.

晓夜寒风

>> help general
. y3 o; M- k# u7 J1 [
! J/ J  v: x/ f! V3 A, a, o+ B/ S General purpose commands.
( X! w1 e6 L: g+ e0 ?# w# n  \. P MATLAB Toolbox  Version 4.2a 25-Jul-94

: a) Y3 h7 T) q Managing commands and functions.
1 U) H8 W4 b) }; P: s7 q8 n+ I   help        - On-line documentation.
) E8 y9 a' Y, x% P$ t' u   doc         - Load hypertext documentation.
   what        - Directory listing of M-, MAT- and MEX-files.
   type        - List M-file.
   lookfor     - Keyword search through the HELP entries.
   which       - Locate functions and files.
; B1 ^: j" d, F* o6 G% h   demo        - Run demos.
: `; T1 i$ A: q8 L0 i! y; t9 E   path        - Control MATLAB's search path.
* Z5 v6 I3 ^1 B+ O& q
5 t/ M$ O- K' l Managing variables and the workspace.
   who         - List current variables.
, s3 I$ d: o) _% u8 @; _   whos        - List current variables, long form.
2 ~9 ?1 f; b) A+ W) \   load        - Retrieve variables from disk.
   save        - Save workspace variables to disk.
   clear       - Clear variables and functions from memory.
, p5 Z- U/ o" ]! y   pack        - Consolidate workspace memory.
- L, m5 d5 p7 I% v2 M. k0 ^   size        - Size of matrix.
* i; r0 A* s5 E. P, ~5 F   length      - Length of vector.
   disp        - Display matrix or text.
+ d( j' |& x' k8 Q* w
Working with files and the operating system.
   cd          - Change current working directory.
! ~* C$ ]" f$ a6 n3 u) V   dir         - Directory listing.
  b* I: I/ e5 p8 s: _9 \' @   delete      - Delete file.
7 z2 [+ E; |# E( e; j% O   getenv      - Get environment value.
9 I% s5 }/ q& Q   !           - Execute operating system command.
; L- M' E* |+ g   unix        - Execute operating system command & return result.
, e5 y9 ^' I7 M3 ~; q2 H! d   diary       - Save text of MATLAB session.
5 y/ @1 ~" T5 ^1 L* Z  X% C% v
  d4 s0 O( ?8 d! ] Controlling the command window.
   cedit       - Set command line edit/recall facility parameters.
   clc         - Clear command window.
   home        - Send cursor home.
   format      - Set output format.
   echo        - Echo commands inside script files.
7 v6 j% t; V$ Z% d7 q   more        - Control paged output in command window.
; \+ L% r# C* _- T
8 Z. O! w5 d1 |0 ^, [% T/ o: w0 \ Starting and quitting from MATLAB.
   quit        - Terminate MATLAB.
/ V& l$ u# D4 `! g) ~   startup     - M-file executed when MATLAB is invoked.
  U- C" D1 G4 I' |0 A$ F. c) M   matlabrc    - Master startup M-file.
$ O, `" X: {, b/ H: r
General information.
   info        - Information about MATLAB and The MathWorks, Inc.
, q/ Y" |  v  h6 x3 E) s   subscribe   - Become subscribing user of MATLAB.
   hostid      - MATLAB server host identification number.
   whatsnew    - Information about new features not yet documented.
   ver         - MATLAB, SIMULINK, and TOOLBOX version information.

晓夜寒风

>> help funfun

Function functions - nonlinear numerical methods.

   ode23       - Solve differential equations, low order method.
   ode23p      - Solve and plot solutions.
   ode45       - Solve differential equations, high order method.
   quad        - Numerically evaluate integral, low order method.
% D( `# X3 q$ z% M6 N( ?8 P4 [   quad8       - Numerically evaluate integral, high order method.
   fmin        - Minimize function of one variable.
   fmins       - Minimize function of several variables.
* X8 O/ m- @8 f) N3 K& m, ?   fzero       - Find zero of function of one variable.
   fplot       - Plot function.

0 i" U/ z; [6 J% O/ d See also The Optimization Toolbox, which has a comprehensive
set of function functions for optimizing and minimizing functions.

晓夜寒风

>> help funfun
4 n) G0 `& r* S, Y
Function functions - nonlinear numerical methods.
: A- L" O. `* e
   ode23       - Solve differential equations, low order method.
$ T% l7 j* A2 _  j   ode23p      - Solve and plot solutions.
   ode45       - Solve differential equations, high order method.
   quad        - Numerically evaluate integral, low order method.
: D6 X. C5 W3 h3 U8 C   quad8       - Numerically evaluate integral, high order method.
+ W0 w# U' S4 ]" m, B6 Y2 _3 U. b   fmin        - Minimize function of one variable.
   fmins       - Minimize function of several variables.
   fzero       - Find zero of function of one variable.
   fplot       - Plot function.
2 }2 i2 j# ]9 X" S5 g
See also The Optimization Toolbox, which has a comprehensive
4 A5 D! l+ N3 k8 k3 ] set of function functions for optimizing and minimizing functions.