Solved

# Square root

Posted on 2011-05-03
319 Views
Can someone help me understand the last part of the last line. How does y^3/2 = x^7 become y = 3sqrt. x^14

Thanks.
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LVL 53

Expert Comment

would it help if I said that y^(1/2) = sqrt(y)
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Author Comment

I wish that statement helped me.

I just don't understand how that second to last equation became the last equation.

y^3/2 is 1 and 1/2
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LVL 53

Expert Comment

>> y^3/2 is 1 and 1/2

I'm not sure what you mean by that.

How about you write y^(3/2) as (y^3)^(1/2) and work from there ? ie. :

(y^3)^(1/2) = x^7
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LVL 2

Accepted Solution

squaring on both sides the equation changes to

y^3 = x^14.. this yields to

y = 3sqrt. x^14

hope you can understand

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Author Comment

I am out of time tonight. I will have to continue this tomorrow.
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Author Closing Comment

Thank you both for your help.
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LVL 53

Expert Comment

>> Thank you both for your help.

I'm glad I could help. Although it's strange that none of my posts were selected as (part of) the answer ;)
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