when and

this right?

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- Aug 7th 2009, 11:28 AMADYevaluation
when and

this right? - Aug 7th 2009, 11:39 AMAmer
- Aug 7th 2009, 11:42 AMADY
So are you saying there are two answers?

- Aug 7th 2009, 11:44 AMAmer
- Aug 7th 2009, 11:45 AMADY
Ok so i'm not sure what to do now then?

- Aug 7th 2009, 11:52 AMAmer
- Aug 7th 2009, 12:07 PMADY
Does the same apply to this formula

- Aug 7th 2009, 12:10 PMAmer
- Aug 7th 2009, 12:20 PMstapel
One might

*say*that the evaluation has two answers, but this would be incorrect. (Blush)

While one*solves*"x^2 = 4" for the two solution values, -2 and +2, "the" value of the square root of 4, sqrt[4], is*defined*to be the principal (that is, the positive real) value: sqrt[4] = 2.

So no, there will most definitely*not*be two answers to this one evaluation exercise! (Surprised)

. . .

And the above is the*only*answer! (Wink)