PG entrance exam CUET PG 2025 Mock Test Engineering Mathematics Differential Equations Euler's Equation
यदि \(u = \sin^{-1} \left(\dfrac{x}{y}\right) + \tan^{-1} \left(\dfrac{y}{x}\right)\) है, तब \(x \dfrac{\partial u}{\partial x} + y \dfrac{\partial u}{\partial y}\)का मान क्या है?
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