Final answer:
To set up an integral for the length of a curve, you need to parametrize the curve using parametric equations and then use the arc length formula to integrate the magnitude of the derivative.
Step-by-step explanation:
The length of a curve can be found using the arc length formula. To set up the integral for the length of the curve, you need to parametrize the curve using parametric equations. Once you have the parametric equations, you can use the arc length formula to find the length of the curve by integrating the magnitude of the derivative of the parametric equations with respect to the parameter.