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If x^(m).y^(n)=(x+y)^(m+n), prove that ...

If `x^(m).y^(n)=(x+y)^(m+n)`, prove that
(i) `(dy)/(dx) =(y)/(x)` and (ii) `(d^(2)y)/(dx^(2)) = 0`

A

`(y)/(x)`

B

`(py)/(qx)`

C

`(x)/(y)`

D

`(qy)/(px)`

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The correct Answer is:
A
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