hell yeah ive seen the computation in the above equation 1 = -1,lol (some geeks discuss about 1 = -1 here) http://cr4.globalspec.com/thread/7484/Fu...th-Answers

1^2=(-1)^2 => √1^2=√(-1)^2 => 1 = -1 (^2 is squared)( i think something is wrong with the equation, lol)

man maths is so hard..... i had to drop it from my a-levels because it was too much to cope with....