If x=rcos⁡θ, y=rsin⁡θ then the value of \(\frac{∂(x,y)}{∂(r, – McqOptions

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1.	If x=rcos⁡θ, y=rsin⁡θ then the value of \(\frac{∂(x,y)}{∂(r,θ)}\) is ________
A.	1
B.	0
C.	r
D.	\(\frac{1}{r}\)
Answer» D.

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