Question: So f is the function defined on R - { 1 } by f ( x ) = - 2 x e x x +

So f is the function defined on R-{1} by f(x)=-2xexx+1. Then,
f'(x)=-2xex(x+1)2
f'(x)=2ex(x+1)2
So f is the function defined on R - { 1 } by f (

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