### Home > CALC > Chapter Ch10 > Lesson 10.1.4 > Problem 10-36

10-36.

*f*(*x*) = 2(*x*^{2} + 1)^{−2} for −2 ≤ *x *≤ 2 when *x *is measured in feet. How long does his garland need to be? Homework Help ✎

The general formula for arc length is:

Use a calculator to complete the integration.