# Superposition of Two Waves

1. Oct 15, 2011

### Septim

Greetings,

I have a question on superposition of two waves and I am pretty new to the topic. I am not contended with my solution and seek your evaluation. Any suggestion, comment is welcome.

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

Consider the superposition of two waves x1 = A1 cos(ω1t) and x2 =
A2 cos(ω2t + δ). If ω1$\cong$ ω2,
(a) What is the beat frequency?
(b) What is the maximum amplitude?
(c) What is the minimum amplitude?

2. Relevant equations

Trigonometric identities for Product-to-sum and sum-to-product.

3. The attempt at a solution

Attached to the post in jpeg format.

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2. Oct 15, 2011