### Home > APCALC > Chapter 2 > Lesson 2.1.2 > Problem 2-28

2-28.

Write an equation that will approximate the area under over the interval

**The Trapezoid Rule**

The Trapezoid Rule can be used to approximate the area under a curve if the widths,

Notice the symmetry about the -axis. If we evaluate the trapezoidal sum on one side of the

*-axis, can we determine the trapezoidal sum on the other side of the*

*-axis?*