Question

Evaluate the definite integral

Answer 1

\[\frac{x-1}{x+1}=\frac{x+1-1-1}{x+1}=\frac{x+1-2}{x+1}=\frac{x+1}{x+1}-\frac{2}{x+1}=1-\frac{2}{x+1}\]

Answer 2

try a U substitution here.