The general solution of sin(3x) + sin(x) = 0 is
Q1. The general solution of sin(3x) + sin(x) = 0 is
Answer: nπ
Explanation: Using sum-to-product identity, we simplify to 2sin(2x)cos(x) = 0, which gives solutions nπ and nπ/2 ± π/4, but the correct general form simplifies to nπ.