engineering recuitment GATE CE 2023-24 Test Series Engineering Mathematics Calculus Differentiability
If \(u = log\left( {\frac{{{x^2} + {y^2}}}{{x + y}}} \right)\), what is the value of \(x\frac{{\partial u}}{{\partial x}} + y\frac{{\partial u}}{{\partial y}}?\)
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0
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