Value of (x frac{ u}{ x}+y frac{ u}{ y} ) if (u= frac{Sin^{-1} ( f – McqOptions

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1.	Value of (x frac{ u}{ x}+y frac{ u}{ y} ) if (u= frac{Sin^{-1} ( frac{y}{x})( sqrt{x}+ sqrt{y})}{x^3+y^3} ) is?
A.	-2.5 u
B.	-1.5 u
C.	0
D.	-0.5 u
Answer» B. -1.5 u

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