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If u = f(y/x) then x(∂u/∂x) + y(∂u/∂y) is equal to ... (a) 0 (b) 1 (c) 2u

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If u = f(y/x) then x(∂u/∂x) + y(∂u/∂y) is equal to ...

(a) 0 

(b) 1 

(c) 2u 

(d) u

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1 Answer

+1 vote
by (47.2k points)
selected by
 
Best answer

(a) 0

Given, 

= nu = 0u = 0 

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