how to write in my x line pi instead of the actual number ?

hello I have 2 question .

1)first what is the diffrnce between the opretion * and .* ? as i undestand it the diffrnce is that you use * when multiplaying scalras and using .* when multiplaying vectors , am i right ?

2) the second question is that I wrote this code :

my question is how can I display my x line as function of pi (meaning 1pi ,2pi,3pi,4pi and so on ) ?

clc;clear all;close all
x=0:0.01:(6*pi)
beta=pi/7
alpha=pi/5
y_1=sin(x*alpha).*cos(x*beta)
 y_2=cos(x*alpha).*sin(x*beta)
 y_3=y_1+y_2
 y_4=sin(x*alpha+x*beta)
 
 figure(1)
 plot(y_3)
 figure(2)
 plot(y_4)

Answer 1

[madhan ravi]

* for matrix mulitplication

doc mtimes

.* for element wise multiplication

doc times

xlim([0 6*pi])
xticks(0:pi:6*pi)
xticklabels((""+(0:6))+"\pi")

[madhan ravi]

https://in.mathworks.com/help/matlab/ref/xticklabels.html#bu71pui-1 - that's why it's worth reading the documentations.

Answer 2

[tomer polsky]

thank you for your answer