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y = 1/(1+x^(beta-alpha)+x^(gamma-alpha))...

`y = 1/(1+x^(beta-alpha)+x^(gamma-alpha))+ 1/(1+x^(alpha-beta)+x^(gamma-beta))+1/(1+x^(alpha-gamma)+x^(beta-gamma))` then dy/dx =

A

0

B

`(alpha + beta + gamma)^(alpha+beta+gamma-1)`

C

1

D

(-1)

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The correct Answer is:
A
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