
Re: when is sqrt(a/b) not the same as sqrt(a)/sqrt(b) ?
Posted:
Mar 4, 2014 9:16 PM


On 03/01/2014 07:54 PM, Richard Fateman wrote:
> Isn't it possible that sqrt(4) has 2 values, sqrt(4) has 2 values as well?
+2...
2...
+2...
2....
Nope. +2 for me!
:)
Honestly, the way math was taught in school, to this day it is easy for me to see x^2 but hard to see both branches of sqrt(x) for positive x  even though they are essentially the same curves. I think it was all the emphasis on functions having a single output value for a given input. If sqrt(x) is a function, then...
 Daniel

