# Category : Science and Education

Archive : SCIEQS13.ZIP

Filename : EXAMPLE5

; This file shows how to evaluate derivatives.

!deriv x, 7 : 2*x + 5

!deriv x, 5 : x^2 - 2*x + 3

!deriv x, 4 : (x + 1) ^ 2

!deriv x, pi()/3 : sin(x)

;

; The following uses a limited range because the function is

; undefined at x = 200.1.

;

!deriv x, 200, 0.09 : 1 / (x - 200.1)

!noecho

Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/