If you want a digital copy without violating copyright, here are legitimate paths:
"The student who studies calculus for the first time often feels he is learning a magic trick. But calculus was born from two very concrete problems: finding the slope of a curved line (the tangent problem) and finding the area under a curved line (the area problem). One is the mathematics of a bullet’s instantaneous speed; the other is the mathematics of the distance that bullet travels. Neither requires a PhD to understand."