Joined: Tue Mar 27, 2007 10:55 pm Posts: 2279 Location: Earth Has thanked: 39 time Have thanks: 61 time
MATLAB basics examples : about arithmetic operation add, subtract ,divide, multiply ,inverse ,power of value ,mean ,standard deviation , if condition , for loop .
Code:
%% clear the screen of the Matlab console . clc; %% define matrix 1x1 with value =2 x=2
%% power of 2 powerX=power(x,2) %% or same operation powerX=x.^2
%% define two matrices 1 row x 4 columns matrix1=[1 2 3 4]; matrix2=[1 1 1 4];
%% Add,subtract ,Divide two matrices. (must be same rows x cols ) addmatrix=matrix1+matrix2 submatrix=matrix1-matrix2 divmatrix=matrix1/matrix2
%% Define two matrices (note char(;) is used to create new row ) A = [1 2 3;43 3 4]; %% 2x3 matrix B = [3 4 ; 2 3; 5 5]; %% 3x2 matrix C =A*B %% 2x2 matrix
%% Inverse of matrix inverseC=inv(C)
%% Define matrix using special function onesMatrix=ones(3,3) % matrix of ones 3 rows x 3 columns. zerosMatrix=zeros(3,5) % matrix of zeros 3 rows x 5 columns.
%% Mean of matrix meanC=mean2(C)
%% Standard deviation stdC=std2(C)
%% Partion of matrix partMatrix=C(1,:) % take the first row , so it creates a partix 1x2 ( note char(:) means all elements)
%% if condition %% remmber x =2 ; if x==2 display('x equal 2');
%% end of if condition end
%% Get the size of matrix (rows ,cols) [rows,cols]= size(C) %% rows =2 , cols=2
%% for loop for i=1:rows for j=1:cols %% print all the content of C matrix 22 ,25,155,201 C(i,j) end end
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