matlab函数英文说明

sin - Sine of argument in radians

This MATLAB function returns thesine of the elements of X.

rand - Uniformly distributed pseudorandom numbers

This MATLAB function returns a pseudorandom scalar drawn from the standard uniform distribution on the open interval (0,1).

global - Declare variables as global

This MATLAB function declares variables var1 ...

sqrt - Square root

This MATLAB function returns the square root of each element of the array X. title - Add title to current axes

This MATLAB function adds the title consisting of a string, str, at the top and

in the center of the current axes.

meshgrid - Rectangular grid in 2-D and 3-D space

This MATLAB function replicates the grid vectors xgv and ygv to produce a full

grid.

inv - Matrix inverse

This MATLAB function returns the inverse of the square matrix X.

inf - Infinity

This MATLAB function returns the IEEE arithmetic representation for positive

infinity.

fix - Round toward zero

This MATLAB function rounds the elements of A toward zero, resulting in an array

of integers.

ones - Create array of all ones

This MATLAB function returns the scalar 1.

linspace - Generate linearly spaced vector

This MATLAB function returns a row vector with 100 linearly spaced points in the

interval [x1,x2].

sort - Sort array elements

This MATLAB function sorts the elements of A in ascending order along the first

array dimension whose size does not equal 1.

grid - Grid lines for 2-D and 3-D plots

This MATLAB function adds major grid lines to the current axes.

plot - 2-D line plot

This MATLAB function creates a 2-D line plot of the data in Y versus the

corresponding values in X.If X and Y are both vectors, then they must have equal length.

surf - 3-D shaded surface plot

This MATLAB function creates a three-dimensional shaded surface from the z

components in matrix Z, using x = 1:n and y = 1:m, where [m,n] = size(Z).

ylabel - Label y-axis

This MATLAB function labels the y-axis of the current axes with the string, str. xlabel - Label x-axis

This MATLAB function labels the x-axis of the current axes with the text