1.

Evaluate the following definite integrals int_-1^1 dx/(x^2+2x+5)

Answer»

SOLUTION :`int_-1^1 DX/(x^2+2x+5) = int_-1^1 dx/((x+1)^2 +4)`
=`[1/2 tan^-1((x+1)/2)]_-1^1`
=`1/2[tan^-1 1- tan^-1 0]`
=`1/2[tan^-1 1- tan^-1 -]`


Discussion

No Comment Found

Related InterviewSolutions