Math miscellaneousHard
Question
If Xm. yn = (x + y)m + n, then
is
is Options
A.

B.

C.xy
D.

Solution
xm.yn = (x + y)m+n ⇒ mlnx + nlny = (m + n)ln(x + y)
∴

⇒
∴


⇒

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is 





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