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hey all! what is x in this? 1/sqrt(x^7

 Aug 30, 2017

Best Answer 

 #3
avatar+27396 
0

Like so:  \(\frac{1}{\sqrt{x^7}}\rightarrow \frac{1}{x^{7/2}} \rightarrow x^{-7/2}\)

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 Aug 30, 2017
 #1
avatar+558 
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x > 0? 

Because the denominator should not be 0, or else there wouldn't be any real solutions.

Correct me if I'm wrong.

(My brain is a bit fuzzy these days. I haven't answered a math question for a while...)

 Aug 30, 2017
 #2
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x should be something like x^(1/4) for example, it has to be positive cause its one of my math tasks that i just cant understand :D

 

sorry for bad english

 Aug 30, 2017
 #3
avatar+27396 
0
Best Answer

Like so:  \(\frac{1}{\sqrt{x^7}}\rightarrow \frac{1}{x^{7/2}} \rightarrow x^{-7/2}\)

.

Alan Aug 30, 2017

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