How we plot the the below function in MATLAB ?

x₃[n]= (0.8)^n U[n] -10< n <10

[michio]

I assume you want to plot x_3 as a function of n. What is U[n]?

Some function or a variable?

Is n an integer ranging from -10 to 10?

fplot from MATLAB base function could be of help. http://www.mathworks.com/help/matlab/ref/fplot.html

[Muhammad Junaid]

U[n] is unit step function. Yes integer ranging from -10 to 10

Answer 1

[Star Strider]

See if this does what you want:

n  = -19:20;
Un = [zeros(1,10) ones(1,20) zeros(1, 10)];

x3 = 0.8.^n .* Un;

figure(1)
stem(n, x3)
grid

[Muhammad Junaid]

Thank you so much its work...

[Star Strider]

My pleasure.

If my Answer solved your problem, please Accept it.