Math, asked by eta82342, 6 months ago

If u=x2tan^−1(y/x)−y2tan^−1(x/y),then find the value of x^2( ∂^2u/∂x ^2)+2xy (∂^2u/∂x∂y)+y^2( ∂^2u/∂y^2)

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Answered by kumaripayal40724

2

Answer:

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