How to plot that?

Hello! How to plot that?

[Mohamad]

Hi , you must mention the following :

f : sinusoid frequency .

alpha : Attenuation .

A

Phi : phase shift

Answer 1

[David Hill]

phi=.1;%not sure what you what
alpha=2*log(10);
f=4;
A=1;
t=0:.001:1;
f=@(t)A*exp(-alpha*t).*cos(2*pi*f*t+phi);
plot(t,f(t));

[RoBoTBoY]

I put pi/2 where phi.

What does @(t) mean?

Answer 2

[KSSV]

A=10;
f=1000;
n=5;
T=1/f;
t=[0:T/100:n*T];
s=A*exp(-t*1000).*sin(2*pi*f*t);