You will need to tell us what type of calculator you are using, otherwise nobody will be able to help you.
2ND*PRGM = Draw
The parameters of this command are:
Shade(lowerfunction, upperfunction, left border, right border, pattern [2 = horizontal lines], resolution [3 = every third pixel is drawn])
I've attached a screenshot of the graphs, the settings of the window, the shade command and the effect of this command on the drawing.