please i need the matlab code for this question

1) Plot the signal x(t)=cost(ω_0 t) for 0≤t≤10 and ω_0=-2π,-π,π,2π

2) Assume x(t)=t,for 0≤t≤2. Plot x(t-1),x(-t+1),and-x(-t).

[Haroon]

see here

Answer 1

[Azzi Abdelmalek]

Use plot function

doc plot

[Azzi Abdelmalek]

Example

t=0:0.1:10
y=sin(t)
plot(t,y)

For more details look at

doc plot
help plot

Answer 2

[Sean de Wolski]

t = (0:0.1:10).';
w_0 = linspace(-2*pi,2*pi,100);
surf(t*ones(size(w_0)),ones(size(t))*w_0,cos(t*w_0))