- 135

- 1

**1. The problem statement, all variables and given/known data**

What are the fundamental frequencies for a 50 kHz square waveform of 50% duty cycle and a 25 kHz sinusoidal waveform, respectively? (The duty cycle of a square waveform is the ratio between the pulse duration and the pulse period.)

**2. Relevant equations**

My teacher then gave an example to illustrate v(t) and c

_{n}. Hence, I have a feeling that I should use these formula to find the answer.

**3. The attempt at a solution**

I am at a loss of which equation to use because there are too many representations of v(t) and c

_{n}in my lecture notes. Nevertheless, I shall attempt o solve the above question.

For the square wave, with its frequency at 50kHz, which is f

_{0}, its period, 1/f

_{0}is 2X10

^{-5}seconds. I don't understand what does T stand for in the equation, but I assume it refres to the amount of time the signal was turned on. Since the signal is ON for half the time, T will be 1X10

^{-5}.

Hence, I will have

Am I correct?

May I have some hints as to how to start the question for the part on sine wave?

Thank you everyone. :)