Mathomatic
Mobile Service on the Web

Enter expressions and commands in the box.
Press "Run Mathomatic" button.
Results below.

Secure Mathomatic version 15.8.0
Copyright (C) 1987-2012 George Gesslein II.
200 equation spaces available in memory,
1920 kilobytes per equation space.
HTML color mode enabled; manage by typing "help color".
1−> set no display2d, debug -1
1−> a=b+1/b
#1: a = b + (1/b)
1−> b
#1: b = (a - (((a^2 - 4)^(1/2))*sign))/2
1−> a
#1: a = (b^2 + 1)/b
1−> simplify
#1: a = b + (1/b)
1−> 
End of input.