I have gone through more than one calculus book and it's not exactly easy, this one. THere is nothing like this one in there. Does anyone know what one must do?

$\displaystyle \int{\sqrt{(1 + (0.6t^2 - 5.64t + 9.1)^2)}}$

David.

Oh, by the way, this is an application integral finding the length of a curve.

the $\displaystyle 0.6t^2 - 5.64t + 9.1$ is the derivative of the curve I want to finding the length of.