2011-03-26, 08:04 PM
If you ever get 0=1 or something else impossible, you've probably divided by 0 somewhere. Here your problem is at the very start.
sqrt(a) = -sqrt(b)
Implies a= b = 0, otherwise its not true
Then your next step
sqrt(a)/sqrt(b) = -1
assumes that 0/0 = -1, which causes all sorts of crazy problems (like leading to 0 =1)
sqrt(a) = -sqrt(b)
Implies a= b = 0, otherwise its not true
Then your next step
sqrt(a)/sqrt(b) = -1
assumes that 0/0 = -1, which causes all sorts of crazy problems (like leading to 0 =1)