Hi,
Today, I am going to briefly introduce how to use MATLAB.
If you have no plan to buy the MATLAB licence, you could try Octave as an alternative.
MATLAB is a matrix-oriented language where you could easily define and manipulate matricies.
In prompt, if you type
a=0
then you are creating a 1x1 matrix with an element is 0.
Also, if you type
b=[1;2;3]
then you declare a vector with element 1,2,3 where ; makes column vector.
Also, you could define a random matrix with
rand()
inverse matrix with
inv()
eigen analysis with
eig()
command.
Let's draw sine function that is drawn in the first figure.
x = (0:0.1:10)'
it defines a vector from 0 to 10 where one step is 0.1. the ' makes the column vector.
If you apply sine function,
y = sin(x)
then you obtain a vector with output of sine function.
Plot the x and y using
figure; plot(x,y)
makes the figure on the right.
It's quite easy and straight-forward, right?