Fundamental Frequency of Fourier Equation in Cosine Form
Problem
Given the Fourier equation:
$$f(t) = 5 \cos (20\pi t) + 2 \cos (40\pi t + \cos (80\pi t)$$
What is the fundamental frequency?
| A. 10 | C. 40 |
| B. 20 | D. 30 |
Problem
Given the Fourier equation:
$$f(t) = 5 \cos (20\pi t) + 2 \cos (40\pi t + \cos (80\pi t)$$
What is the fundamental frequency?
| A. 10 | C. 40 |
| B. 20 | D. 30 |