The value at t=2 of f(t) is

when f(t) = u(t)+r(t-1)

Is the function y[n] = cos(x[n]) periodic or not? 

Give answer in True/False.

If L^-1{F(s)} = f(t), what is the value of L^-1[e^-asF(s)]?

What is the Laplace transform of (t·sinh(a·t))/(2·a)?

If the processing gain is changed to 500, then the number of users will be:

The Fourier transform of e^-|x| is 2/(1+p²). What is the Fourier transform of e^-2|x|?

What is the value of the coefficient a₀ in the Fourier series expansion of the function f(x) = x³ over the interval [0, 5]?

A discrete-time signal is derived from a continuous-time signal by the _____________ process.

A triangle having base from t=0 to t=4 having peak amplitude 6 . Can be represented as

The most suitable method for detecting a modulated signal g(t) = (3 + 6 cos 2πf_mt) cos 2πf_ct is