Question

The signal x(t)=3 sin 200πt + 4 cos 100t is.
1.Periodic
2.Non-periodic
3.Can not determine
4.None
​

Answer 1

Answer:

1

Explanation:

periodic

A signal x (t) is said to be non periodic signal if it does not satisfy the equation x(t) = x(t + T).

yes, this is periodic. The product of two sinusoids is the sum of two sinusoids, with the frequencies being the sum and difference of the original sinusoids: that’s a basic trigonometric identity.

Since the two components are sinusoidal and periodic, the sum is periodic.

1st term periodic with period 6Π and also 2nd term

as Sin(x+2Π)= Sin x = Cos (x+2Π)

Answer 2

Answer:

momimimmknnommknnkkmkkhgvbnj