In calculus if we want to find the area under a curve, there is often a simple technique of calculus for us to use. Consider the curve in Figure 3-1. This is the curve of y = 2x – x2.
The technique involves adding one to the power and bringing the power down to divide.
This is specified by
In this case we have chosen to find the area between 0.4 and 1.6 on the x-axis. ...