9000065909

Level: 
Project ID: 
9000065909
Accepted: 
1
Easy: 
1
Given function \[ F(x) = 2\ln |x + 1|, \] find the function \(f\) such that \(F\) is primitive to \(f\) on \((-1;+\infty )\).
\(f(x) = \frac{2} {x+1}\)
\(f(x) = 2\mathrm{e}^{x+1}\)
\(f(x) = \frac{1} {2(x+1)}\)
\(f(x) = \frac{2} {2x+2}\)