Page:Calculus Made Easy.pdf/232

 value of the general integral in square brackets with the limits marked above and below, we get

Let us satisfy ourselves about this rather surprising dodge of calculation, by testing it on a simple example. Get some squared paper, preferably some



that is ruled in little squares of one-eighth inch or one-tenth inch each way. On this squared paper plot out the graph of the equation,

The values to be plotted will be:

The plot is given in Fig. 54.