Question

Given the signal e(t)=5sin(3t)+3sin(6t)

please find

all frequencies less than ω=50rad/s that are present in e(t),

Answer 1

The frequencies present in the given signal are 3 and 6.

Step-by-step explanation:

The signal e(t) = 5sin(3t) + 3sin(6t) can be written as a sum of sinusoidal functions. The frequencies present in e(t) are determined by the coefficients in front of the sin functions. In this case, the frequencies are 3 and 6.

However, we are only interested in frequencies less than ω = 50 rad/s. Since both frequencies in e(t) are less than 50, both are present in the signal.