f_{yy} = \frac{\partial}{\partial y} \left[ -2y\sin(x^2 + y^2) - x\cos(xy) \right]
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f_{yy} = \frac{\partial}{\partial y} \left[ -2y\sin(x^2 + y^2) - x\cos(xy) \right]
MathBot Answer:
MathBot is working on a solution to your problem.