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Solve dy/dx = y/x + tan(y/x) for the general solution.
Acos(y/x) = Cx
Bsin(y/x) = Cx
Ctan(y/x) = Cx
Dsin(y/x) = C + x
Answer & Solution
Correct answer: B. sin(y/x) = Cx
With y = vx, x dv/dx = tan v, so cot v dv = dx/x and ln sin v = ln x + ln C, giving sin(y/x) = Cx.
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