1. The problem statement, all variables and given/known data Find derivative of y with respect to x. Sin(xy) = Sinx Siny 2. Relevant equations 3. The attempt at a solution Use chain rule (product rule for inner function) to differentiate the left. Use product rule to differentiate the right and I get the following: cos(xy)(y+xy') = (cosx siny) + (cosy' sinx) distribute the cos(xy) on the left to get: ycos(xy) + xy'cos(xy) = (cosx siny) + (cosy' sinx) Rearrange to get y' on one side, everything else on the other. ycos(xy) - cosx siny = -xy'cos(xy) + cosy' sinx Now what? I don't understand how I'd solve for y' from here. Inverse cosine?