11. There are also mathematical functions describing the C _ n ^ 2 profile. 12. McIDAS-V can also analyze and manipulate the data with its powerful mathematical functions . 13. In general, integrals containing cannot be found in terms of standard mathematical functions . 14. Miller's recurrence algorithm is mentioned in the " Handbook of Mathematical Functions ". 15. FN is given by a mathematical function called " s ". 16. KmPlot is a mathematical function plotter released under the free ( GPL ). 17. The mechanical elements obey mathematical functions which are identical to their corresponding electrical elements. 18. Taper is often represented by mathematical functions fitted to empirical data, called taper equations. 19. Many statements demand arguments in parentheses, similar to the syntax used for mathematical functions . 20. Functional programming languages define programs and subroutines as mathematical functions .