Let f[x, y) = xn ym = P. If x is doubled and y is halved,

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Let f[x, y) = xⁿ y^m = P. If x is doubled and y is halved, the new value of f is

1. 2^n–m P
2. 2^m–n P
3. 2(n-m)P
4. 2(m–n)P

Correct Option: A

P' = 2ⁿXⁿ		1		^m	y^m
		7

= 2^{n - m}XⁿY^m = 2^{n - m} P