
#1
Feb1212, 04:02 AM

P: 94

1. The problem statement, all variables and given/known data
This is from a textbook: Y=X^1/2 is the same as Y=+/sqrt(X) 2. Relevant equations 3. The attempt at a solution 100^1/2=10 How is 100^1/2=10 also true? Thanks. 



#2
Feb1212, 05:12 AM

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Thanks
P: 26,167

hi solve!
(which book?) 



#3
Feb1212, 05:36 AM

P: 94

As for the book, I dont wanna name it and make the otherwise excellent textbook look bad. 



#4
Feb1212, 12:47 PM

HW Helper
Thanks
P: 4,676

Y=X^1/2 is the same as Y=+/sqrt(X) ??RGV 



#5
Feb1212, 01:17 PM

Emeritus
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P: 7,418

On the other hand, if the author is explaining how to solve y^{2} = x, for y, or solve y^{2} = 100 for y, then the answers are:
y = ± √(x) = ±(x)^{1/2} for y^{2} = xIf this is the case you have only told us part of what the textbook was claiming, although the author may have also left a few details out of her/his explanation. 


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