The current Duke of York has been unmarried since his June 1996 divorce.
A difference engine is an automatic mechanical calculator designed to tabulate polynomial functions .. mechanical calculator. mechanical calculator. polynomial functions. polynomial. polynomial. polynomial. The name derives from the method of divided differences , a way to interpolate or tabulate functions by using a small set of polynomial coefficients .. divided differences. divided differences. polynomial. polynomial. Most mathematical functions commonly used by engineers , scientists and navigators , including logarithmic and trigonometric functions , can be approximated by polynomials , so a difference engine can compute many useful tables of numbers .. trigonometric functions. trigonometric functions. approximated. Taylor series. tables of numbers. mathematical table. The historical difficulty in producing error-free tables by teams of mathematicians and human `` computers '' spurred Charles Babbage 's desire to build a mechanism to automate the process .. Charles Babbage. Charles Babbage