# calculus

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find the nth derivative of 2/(x+1)

• calculus -

n=1; f'=-2/(x+1)^2
n=2; f"=2*2/(x+1)^3

nth = (-2)^n * 1/(x+1)^(n+1)

check that.

• calculus -

that is only true for the first three.

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