Matlab入门（英文）

晓夜寒风

Some MATLAB function descriptions
These 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.

>> help

晓夜寒风

HELP topics:
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matlab/general       -  General purpose commands.
matlab/ops           -  Operators and special characters.
! v3 j& Q+ y2 D5 n; |matlab/lang          -  Language constructs and debugging.
matlab/elmat         -  Elementary matrices and matrix manipulation.
matlab/specmat       -  Specialized matrices.
matlab/elfun         -  Elementary math functions.
8 n4 O5 r! C  p9 C/ ?matlab/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.
/ r1 j5 n. s" F7 r0 D0 Umatlab/funfun        -  Function functions - nonlinear numerical methods.
matlab/sparfun       -  Sparse matrix functions.
matlab/plotxy        -  Two dimensional graphics.
2 I# i; [6 G! H9 Nmatlab/plotxyz       -  Three dimensional graphics.
matlab/graphics      -  General purpose graphics functions.
; F. R$ p% K  ?$ Y4 F+ kmatlab/color         -  Color control and lighting model functions.
matlab/sounds        -  Sound processing functions.
5 I8 o9 Q% P. w" F" V8 E# Omatlab/strfun        -  Character string functions.
" D0 r' E2 }, A' q, Smatlab/iofun         -  Low-level file I/O functions.
matlab/demos         -  The MATLAB Expo and other demonstrations.
toolbox/chem         -  Chemometrics Toolbox
' l8 ^" W3 f& Otoolbox/control      -  Control System Toolbox.
! T$ K+ t/ g1 i# N( i# dfdident/fdident      -  Frequency Domain System Identification Toolbox
fdident/fddemos      -  Demonstrations for the FDIDENT Toolbox
toolbox/hispec       -  Hi-Spec Toolbox
) v4 U0 j% S3 ^3 Q  U$ {7 V; c5 Etoolbox/ident        -  System Identification Toolbox.
, z* s3 _9 C* Q2 i9 k0 ttoolbox/images       -  Image Processing Toolbox.
6 g/ g: x; H4 h8 e, a( N' o8 _toolbox/local        -  Local function library.
toolbox/mmle3        -  MMLE3 Identification Toolbox.
mpc/mpccmds          -  Model Predictive Control Toolbox
+ k/ f" m" z8 z) @/ wmpc/mpcdemos         -  Model Predictive Control Toolbox
$ ?9 d7 L' s  W0 B  @mutools/commands     -  Mu-Analysis and Synthesis Toolbox.: Commands directory
mutools/subs         -  Mu-Analysis and Synthesis Toolbox -- Supplement
/ J4 U! ]! z7 `+ ?% \3 C# ctoolbox/ncd          -  Nonlinear Control Design Toolbox.
nnet/nnet            -  Neural Network Toolbox.
9 l9 j2 i. {( ]' e! Q: O5 jnnet/nndemos         -  Neural Network Demonstrations and Applications.
toolbox/optim        -  Optimization Toolbox.
# W$ ~* d  b4 E5 c: Y- t3 Qtoolbox/robust       -  Robust Control Toolbox.
' t2 A+ F6 n' a( B8 t4 N! Atoolbox/signal       -  Signal Processing Toolbox.
toolbox/splines      -  Spline Toolbox.
toolbox/stats        -  Statistics Toolbox.
toolbox/symbolic     -  Symbolic Math Toolbox.
toolbox/wavbox       - (No table of contents file)
+ c$ `( [! `3 E0 ^, Psimulink/simulink    -  SIMULINK model analysis and construction functions.
! c# Y: L6 {* @# b' Gsimulink/blocks      -  SIMULINK block library.
" `5 D: {# C" P5 @simulink/simdemos    -  SIMULINK demonstrations and samples.
. N! H/ R3 {6 W( u& ytoolbox/codegen      -  Real-Time Workshop
1 v/ L# t1 y+ K/ j  X1 `- |4 d% }3 w
; O& B, m8 s' L9 D% `) YFor more help on directory/topic, type "help topic".

晓夜寒风

>> help elmat

$ s8 @1 B5 Z/ X& S" b3 z  X Elementary matrices and matrix manipulation.

  i  T6 n; X# T! g' H( a Elementary matrices.
   zeros       - Zeros matrix.
6 D& u, ?* Z( I1 b: h, N+ @, u0 N   ones        - Ones matrix.
   eye         - Identity matrix.
   rand        - Uniformly distributed random numbers.
   randn       - Normally distributed random numbers.
   linspace    - Linearly spaced vector.
   logspace    - Logarithmically spaced vector.
* g& P3 H2 n5 _% U( s1 m   meshgrid    - X and Y arrays for 3-D plots.
+ ^" b8 R6 F5 n   :           - Regularly spaced vector.
2 ~5 x! U8 g- w. |1 ^  l& u+ k
Special variables and constants.
   ans         - Most recent answer.
3 `7 x( p% ~! S5 F3 c$ S) m   eps         - Floating point relative accuracy.
   realmax     - Largest floating point number.
' S% H, i  [% M# d8 G   realmin     - Smallest positive floating point number.
   pi          - 3.1415926535897....
   i, j        - Imaginary unit.
   inf         - Infinity.
5 Y& P/ _5 q- B' i   NaN         - Not-a-Number.
' |. V' A2 f$ w   flops       - Count of floating point operations.
. @6 }& k# |' o# ]+ ]. z# S& j8 q   nargin      - Number of function input arguments.
* B& x' F0 X7 h   nargout     - Number of function output arguments.
- D. H- J1 H# e# Z" ^' E   computer    - Computer type.
   isieee      - True for computers with IEEE arithmetic.
4 l" I2 m3 D/ \4 E   isstudent   - True for the Student Edition.
/ y" d0 |* ?! P) M( v   why         - Succinct answer.
   version     - MATLAB version number.
/ m& h3 q3 K& @6 w2 J- A
- [/ e% f( v% n& m' y, L) Y2 ?/ L Time and dates.
5 g2 `1 a( k2 y4 |+ s   clock       - Wall clock.
   cputime     - Elapsed CPU time.
9 M2 |/ b: C! N   date        - Calendar.
   etime       - Elapsed time function.
   tic, toc    - Stopwatch timer functions.
) o1 I2 ?6 B, k7 e! |, d8 M
" u. {* B) S. B6 K( _5 e Matrix manipulation.
$ M; M0 a/ Q! x" s8 Q- G   diag        - Create or extract diagonals.
$ o* u3 v* l9 E9 C9 N   fliplr      - Flip matrix in the left/right direction.
   flipud      - Flip matrix in the up/down direction.
   reshape     - Change size.
   rot90       - Rotate matrix 90 degrees.
5 q! c7 g5 e* ^" y% \   tril        - Extract lower triangular part.
9 V! X9 |' X1 E7 `8 {" {9 y' C4 n* E   triu        - Extract upper triangular part.
   :           - Index into matrix, rearrange matrix.

晓夜寒风

>> help specmat
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6 q& h# k" \, x- o: P/ @6 ? Specialized matrices.
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% W! t# L; A, @5 I: A( ~! ?   compan      - Companion matrix.
, @. J" M+ w& a  X+ r4 H   gallery     - Several small test matrices.
   hadamard    - Hadamard matrix.
+ A7 R- y& @9 ]1 ]7 n6 l$ V   hankel      - Hankel matrix.
   hilb        - Hilbert matrix.
1 {5 C9 W2 p* n( k7 l3 T& Q2 q   invhilb     - Inverse Hilbert matrix.
   kron        - Kronecker tensor product.
4 J! I  R2 C$ e0 {/ p   magic       - Magic square.
   pascal      - Pascal matrix.
  ?/ U' Z; m/ l) o( _/ d   rosser      - Classic symmetric eigenvalue test problem.
) ^( I7 P4 L  Q0 ^' ~+ K. v, z   toeplitz    - Toeplitz matrix.
. B! b3 w( J8 s   vander      - Vandermonde matrix.
   wilkinson   - Wilkinson's eigenvalue test matrix.


! v2 D0 A9 ~  n6 S! [>> help elfun

Elementary math functions.
: d. s. B3 Z0 T# a/ A6 }
Trigonometric.
' E. Y8 ?: X* F+ |0 a/ h0 r( G! A   sin         - Sine.
: K- u8 o0 e  H   sinh        - Hyperbolic sine.
   asin        - Inverse sine.
5 Z8 j1 `, b9 ~( x  o   asinh       - Inverse hyperbolic sine.
   cos         - Cosine.
& z1 y3 W2 ~: n' Y  ?   cosh        - Hyperbolic cosine.
   acos        - Inverse cosine.
   acosh       - Inverse hyperbolic cosine.
   tan         - Tangent.
8 k) [" m+ f0 U0 S   tanh        - Hyperbolic tangent.
# ~7 Y! l5 a$ u6 L   atan        - Inverse tangent.
   atan2       - Four quadrant inverse tangent.
$ Y5 ^9 r4 O7 {: V4 f7 w   atanh       - Inverse hyperbolic tangent.
   sec         - Secant.
   sech        - Hyperbolic secant.
8 R1 M7 V6 D+ l7 S   asec        - Inverse secant.
   asech       - Inverse hyperbolic secant.
   csc         - Cosecant.
7 f  r6 I( \( ~, J2 F( M7 {! m+ w   csch        - Hyperbolic cosecant.
   acsc        - Inverse cosecant.
   acsch       - Inverse hyperbolic cosecant.
8 D5 L  r& X) s; w   cot         - Cotangent.
   coth        - Hyperbolic cotangent.
   acot        - Inverse cotangent.
   acoth       - Inverse hyperbolic cotangent.

3 Z* [1 |& Y4 u! l Exponential.
   exp         - Exponential.
+ Z& m4 L' S. z   log         - Natural logarithm.
   log10       - Common logarithm.
   sqrt        - Square root.

3 ^) W3 N: y+ h- {# Y9 |* ] Complex.
   abs         - Absolute value.
   angle       - Phase angle.
   conj        - Complex conjugate.
   imag        - Complex imaginary part.
   real        - Complex real part.
4 \5 J- i) \! @: b( P1 m
Numeric.
   fix         - Round towards zero.
, J# p. G7 i9 c   floor       - Round towards minus infinity.
7 j1 g% t7 O; ?& W" e( O   ceil        - Round towards plus infinity.
   round       - Round towards nearest integer.
   rem         - Remainder after division.
1 H; K1 o: m7 W; k8 T; W   sign        - Signum function.
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. Z3 I/ X' [- r" @% o# r
. O8 `1 ?/ G) N& J1 \; K, i>> help specfun

晓夜寒风

>> help specmat
5 F, [6 C( C" Q
; v. R5 {! F5 }- } Specialized matrices.
6 m1 s! d! V, t8 Y
   compan      - Companion matrix.
5 n9 G2 e3 _% V3 E$ M# }   gallery     - Several small test matrices.
3 d# P" ^2 c0 z# S# L5 O7 D   hadamard    - Hadamard matrix.
   hankel      - Hankel matrix.
   hilb        - Hilbert matrix.
9 J2 x2 F: z; d; E' @9 Q4 U: X   invhilb     - Inverse Hilbert matrix.
   kron        - Kronecker tensor product.
4 m% }9 d( c2 C2 I6 Y5 b! N. m   magic       - Magic square.
   pascal      - Pascal matrix.
( [6 M, p* B1 L+ ^" l   rosser      - Classic symmetric eigenvalue test problem.
   toeplitz    - Toeplitz matrix.
   vander      - Vandermonde matrix.
4 D) P3 ?4 d! ]   wilkinson   - Wilkinson's eigenvalue test matrix.

1 S; T1 d& g/ x, M/ H, N0 B% x) N
& r$ b6 X% H/ K* Q8 F+ D$ F  b# ]) p>> help elfun

Elementary math functions.

. C3 H% x# \- \$ w% t" ~6 @4 ] Trigonometric.
9 T, C* v  e) v+ X& F   sin         - Sine.
   sinh        - Hyperbolic sine.
% z( t8 n4 m) z* m0 P+ v& C% w1 F   asin        - Inverse sine.
   asinh       - Inverse hyperbolic sine.
   cos         - Cosine.
) ^3 J% ~1 ?" x' G: V% C) \. L3 u) I   cosh        - Hyperbolic cosine.
   acos        - Inverse cosine.
   acosh       - Inverse hyperbolic cosine.
   tan         - Tangent.
   tanh        - Hyperbolic tangent.
   atan        - Inverse tangent.
   atan2       - Four quadrant inverse tangent.
/ ?( ?7 C, |5 l3 T& `   atanh       - Inverse hyperbolic tangent.
   sec         - Secant.
   sech        - Hyperbolic secant.
6 G0 B$ G6 {. T2 i  T4 ]   asec        - Inverse secant.
4 q4 P; D$ N, |- }7 D   asech       - Inverse hyperbolic secant.
   csc         - Cosecant.
7 l4 K3 h% Z3 M+ C0 k  S   csch        - Hyperbolic cosecant.
; A5 V7 ~3 P7 K" l& h% n4 A   acsc        - Inverse cosecant.
: b; m2 s' O, H  q5 R) O   acsch       - Inverse hyperbolic cosecant.
   cot         - Cotangent.
   coth        - Hyperbolic cotangent.
   acot        - Inverse cotangent.
$ l7 a/ }& i6 H/ w   acoth       - Inverse hyperbolic cotangent.

Exponential.
   exp         - Exponential.
! D9 Z8 i: U* [, v: k   log         - Natural logarithm.
   log10       - Common logarithm.
, E2 m4 V4 M+ b, c; M   sqrt        - Square root.
, {+ O1 T. _# Y3 y
) \' ]3 t# b4 o Complex.
; p4 u" y1 P; c7 x; v   abs         - Absolute value.
+ ~* X0 B; {6 {' ?8 E4 M   angle       - Phase angle.
   conj        - Complex conjugate.
   imag        - Complex imaginary part.
' U6 X& T- m& D$ b   real        - Complex real part.
. p8 B. m* a4 X5 q! U
) h& G% i/ g" [+ ~2 V0 W; i# V& L Numeric.
   fix         - Round towards zero.
   floor       - Round towards minus infinity.
   ceil        - Round towards plus infinity.
   round       - Round towards nearest integer.
, N; k; B! c$ @' P( {4 [: f! E   rem         - Remainder after division.
6 F4 Q/ Y9 _: c" Y   sign        - Signum function.
$ L' Z& ?% H6 i7 Z6 |7 [# R
) L" c, y, W2 g" o% `+ c) N2 W  X
>> help specfun

晓夜寒风

Specialized math functions.
% z  N' k4 }7 j  P  }+ `
   besselj     - Bessel function of the first kind.
$ \3 S5 j  S8 [0 _0 a4 o   bessely     - Bessel function of the second kind.
   besseli     - Modified Bessel function of the first kind.
   besselk     - Modified Bessel function of the second kind.
   beta        - Beta function.
   betainc     - Incomplete beta function.
   betaln      - Logarithm of beta function.
) I/ P; @, h, Q" b   elli石皮解      - Jacobi elliptic functions.
   ellipke     - Complete elliptic integral.
   erf         - Error function.
: ~. _, Y# Z  M   erfc        - Complementary error function.
   erfcx       - Scaled complementary error function.
   erfinv      - Inverse error function.
2 S; B" {; C! l   expint      - Exponential integral function.
- @8 o( y. }! M5 S) I   gamma       - Gamma function.
   gcd         - Greatest common divisor.
- h* ]. {! d+ Y9 k   gammainc    - Incomplete gamma function.
% |$ O8 c# L5 Q0 t   lcm         - Least common multiple.
   legendre    - Associated Legendre function.
   gammaln     - Logarithm of gamma function.
   log2        - Dissect floating point numbers.
   pow2        - Scale floating point numbers.
4 }" F# x2 ]% z   rat         - Rational approximation.
4 I- B3 ~+ S, w$ R% ?5 X   rats        - Rational output.
   cart2sph    - Transform from Cartesian to spherical coordinates.
+ {2 T9 @% O" X8 t   cart2pol    - Transform from Cartesian to polar coordinates.
3 N5 y, N! f( g. S/ P& Z   pol2cart    - Transform from polar to Cartesian coordinates.
   sph2cart    - Transform from spherical to Cartesian coordinates.

, T3 f0 F4 W2 [$ p3 {: N$ _
' g/ |* c6 U  ?' {+ ?>> help matfun

) [4 _3 _" n8 b/ D Matrix functions - numerical linear algebra.

Matrix analysis.
, X8 u$ I7 v+ l* A. V   cond        - Matrix condition number.
   norm        - Matrix or vector norm.
   rcond       - LINPACK reciprocal condition estimator.
1 p2 T1 j1 W5 D2 b' c: R& W6 M' b: ]   rank        - Number of linearly independent rows or columns.
   det         - Determinant.
   trace       - Sum of diagonal elements.
1 \) K  P! `$ N" n8 x. A   null        - Null space.
   orth        - Orthogonalization.
   rref        - Reduced row echelon form.
  G7 T, r6 \; ?. e! S, l! H
Linear equations.
0 f5 J( F. s4 t3 a* |$ }- i   \ and /     - Linear equation solution; use "help slash".
   chol        - Cholesky factorization.
   lu          - Factors from Gaussian elimination.
   inv         - Matrix inverse.
   qr          - Orthogonal-triangular decomposition.
! z7 r; [6 T, {8 i! k. k( c   qrdelete    - Delete a column from the QR factorization.
   qrinsert    - Insert a column in the QR factorization.
   nnls        - Non-negative least-squares.
% X' c/ R8 Q  F  Z8 u3 B0 D3 a   pinv        - Pseudoinverse.
# b, `: `" x6 ?( ?   lscov       - Least squares in the presence of known covariance.

Eigenvalues and singular values.
   eig         - Eigenvalues and eigenvectors.
: [* `" i0 \) I9 K/ ]% T   poly        - Characteristic polynomial.
; Z, [$ m: Z9 h8 ?/ {4 F% H   polyeig     - Polynomial eigenvalue problem.
   hess        - Hessenberg form.
; F/ A$ Z7 w. f. e  L   qz          - Generalized eigenvalues.
4 }0 v7 ]! K% x   rsf2csf     - Real block diagonal form to complex diagonal form.
   cdf2rdf     - Complex diagonal form to real block diagonal form.
+ p; r) b  m: ?$ f# f   schur       - Schur decomposition.
: C! y5 a) M9 M   balance     - Diagonal scaling to improve eigenvalue accuracy.
   svd         - Singular value decomposition.
1 e5 J* E1 k  `6 ^& P, o9 I
Matrix functions.
   expm        - Matrix exponential.
   expm1       - M-file implementation of expm.
% g3 y9 T1 m; {1 y( ]   expm2       - Matrix exponential via Taylor series.
4 L, z# N$ O  g# a8 K5 K   expm3       - Matrix exponential via eigenvalues and eigenvectors.
4 q/ K3 y, I/ J, b   logm        - Matrix logarithm.
   sqrtm       - Matrix square root.
   funm        - Evaluate general matrix function.

晓夜寒风

>> help general
4 c7 O7 v" @' r% H0 p
General purpose commands.
MATLAB Toolbox  Version 4.2a 25-Jul-94
; y4 I. j! f, u) D, G
  h0 T! q- D8 X Managing commands and functions.
$ {- Q, V+ T5 D2 _   help        - On-line documentation.
( g: R) \8 S+ g, L   doc         - Load hypertext documentation.
   what        - Directory listing of M-, MAT- and MEX-files.
   type        - List M-file.
   lookfor     - Keyword search through the HELP entries.
! K, W: A# R" ]0 {. D   which       - Locate functions and files.
: B+ B4 j/ `6 C# _# R1 Y   demo        - Run demos.
- M% i7 W# [2 }: {( H- T   path        - Control MATLAB's search path.

$ G2 g) {8 I. E7 `7 n Managing variables and the workspace.
! u, U6 D6 d  n   who         - List current variables.
( V/ ?0 A7 p7 O. g   whos        - List current variables, long form.
   load        - Retrieve variables from disk.
   save        - Save workspace variables to disk.
6 \, ^0 _9 H! r) N   clear       - Clear variables and functions from memory.
   pack        - Consolidate workspace memory.
   size        - Size of matrix.
- Z3 ?3 ~; q1 {) H8 T! e  N5 t) K   length      - Length of vector.
   disp        - Display matrix or text.

3 R4 y# B% V% z- U- f0 s Working with files and the operating system.
* X5 V; f2 W1 D# `/ j' t; @( T   cd          - Change current working directory.
" G7 u5 D# T+ M. B: G5 H1 G   dir         - Directory listing.
   delete      - Delete file.
7 ?6 k- ^6 X. ]2 d   getenv      - Get environment value.
2 @1 D! \1 N  B4 t, O3 n/ m, \   !           - Execute operating system command.
, N" T% V- d! m8 e. d- U0 T" A- ?0 I& Y   unix        - Execute operating system command & return result.
   diary       - Save text of MATLAB session.

Controlling the command window.
5 p5 J* S* y# W. P4 |4 o7 A/ N   cedit       - Set command line edit/recall facility parameters.
3 b) ~- q9 D2 i0 |7 Y   clc         - Clear command window.
   home        - Send cursor home.
   format      - Set output format.
   echo        - Echo commands inside script files.
   more        - Control paged output in command window.

Starting and quitting from MATLAB.
   quit        - Terminate MATLAB.
- O$ _9 s6 k- K# c: |$ m   startup     - M-file executed when MATLAB is invoked.
3 |& {; o& p; W+ i2 M   matlabrc    - Master startup M-file.

# Q/ `1 u3 d) Z& v3 C1 W3 N General information.
4 m; w& c/ w/ h( c! ~) C0 o   info        - Information about MATLAB and The MathWorks, Inc.
   subscribe   - Become subscribing user of MATLAB.
   hostid      - MATLAB server host identification number.
   whatsnew    - Information about new features not yet documented.
3 R, L, I& w5 v4 i- U6 m5 ^# e' f& ^   ver         - MATLAB, SIMULINK, and TOOLBOX version information.

晓夜寒风

>> help general
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General purpose commands.
MATLAB Toolbox  Version 4.2a 25-Jul-94

Managing commands and functions.
1 y* m- U# b: m" L   help        - On-line documentation.
   doc         - Load hypertext documentation.
   what        - Directory listing of M-, MAT- and MEX-files.
1 p. l2 ]; o' X/ s. c" |   type        - List M-file.
   lookfor     - Keyword search through the HELP entries.
   which       - Locate functions and files.
: j  a/ C* F% d, M# T; Z' i   demo        - Run demos.
" L3 |) Z; I4 U0 Y: A- [7 t8 N/ Y   path        - Control MATLAB's search path.

  s/ ^8 P! E/ B" z( ?- h* s) n/ v Managing variables and the workspace.
   who         - List current variables.
   whos        - List current variables, long form.
3 k9 |2 O2 q' e" p0 S) m   load        - Retrieve variables from disk.
; `; L3 f7 L  y: h7 `   save        - Save workspace variables to disk.
& C1 K  q+ k/ |0 d3 a8 e   clear       - Clear variables and functions from memory.
: V0 v9 `' j$ G8 j& b0 p   pack        - Consolidate workspace memory.
: h2 Q6 |5 `. T* L3 [   size        - Size of matrix.
, \* u7 f# C( f& `   length      - Length of vector.
   disp        - Display matrix or text.
% N! [9 n6 M0 l7 o  q
Working with files and the operating system.
   cd          - Change current working directory.
   dir         - Directory listing.
   delete      - Delete file.
   getenv      - Get environment value.
; M+ B" F8 W( P/ `8 O   !           - Execute operating system command.
   unix        - Execute operating system command & return result.
   diary       - Save text of MATLAB session.
3 F1 ~  R2 ~3 i( t0 @) X% ~" J( N
6 j1 U; S7 Y1 L! T  a- a Controlling the command window.
5 f9 t3 X8 `8 H& g   cedit       - Set command line edit/recall facility parameters.
   clc         - Clear command window.
   home        - Send cursor home.
4 }" l. f* ~8 b   format      - Set output format.
( X( X) q, S4 y   echo        - Echo commands inside script files.
   more        - Control paged output in command window.
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Starting and quitting from MATLAB.
   quit        - Terminate MATLAB.
0 C6 _0 g5 v+ q* M3 F" w   startup     - M-file executed when MATLAB is invoked.
" Q& r6 I1 z/ L! s   matlabrc    - Master startup M-file.
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5 C* d; m# e. j9 E General information.
   info        - Information about MATLAB and The MathWorks, Inc.
( u4 e# Y: B1 D' z" a# f, t1 v   subscribe   - Become subscribing user of MATLAB.
   hostid      - MATLAB server host identification number.
" e  G/ Q+ h* @6 D3 x' h: y   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.

" ~8 K. G: ]9 A% f1 U' G* V   ode23       - Solve differential equations, low order method.
( G  o2 R! p4 Q4 S   ode23p      - Solve and plot solutions.
. M' g1 t6 o2 H0 F9 q2 O   ode45       - Solve differential equations, high order method.
   quad        - Numerically evaluate integral, low order method.
5 |! e( \4 V7 h7 Y) C; K   quad8       - Numerically evaluate integral, high order method.
( U" g  _2 T5 v! f   fmin        - Minimize function of one variable.
: F+ ^% W! M9 V+ w4 H3 Z   fmins       - Minimize function of several variables.
( Q0 C- U8 v. i0 V! b   fzero       - Find zero of function of one variable.
   fplot       - Plot function.

See also The Optimization Toolbox, which has a comprehensive
set of function functions for optimizing and minimizing functions.

晓夜寒风

>> help funfun
2 X! _0 }9 {3 P+ o; u( Z
Function functions - nonlinear numerical methods.

7 Q3 W3 ?7 L/ [- G' f. T1 f   ode23       - Solve differential equations, low order method.
   ode23p      - Solve and plot solutions.
; R( i& \# s& R   ode45       - Solve differential equations, high order method.
, R0 D' t6 l) {! R2 [4 ?( J( u  Z( B   quad        - Numerically evaluate integral, low order method.
: q& e- o2 g( I$ A+ H   quad8       - Numerically evaluate integral, high order method.
* w+ d! H! a3 a& n( g; J: `: u$ J   fmin        - Minimize function of one variable.
, C8 r7 O2 T; w+ L# m   fmins       - Minimize function of several variables.
   fzero       - Find zero of function of one variable.
% O3 d5 Y. E' n8 l   fplot       - Plot function.

See also The Optimization Toolbox, which has a comprehensive
( h# y! p' w( J+ ^% Z8 Y set of function functions for optimizing and minimizing functions.