Difference Engine Weierstrass: A machine to compute mathematical tables – Any continuous function can be approximated by a polynomial – Any Polynomial can be computed from difference tables

Make a Table with the equations.

You can use Addition and Find the next value of function for a new “n”.

source : http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-823-computer-system-architecture-fall-2005/lecture-notes/