hey all! what is x in this? 1/sqrt(x^7
Like so: \(\frac{1}{\sqrt{x^7}}\rightarrow \frac{1}{x^{7/2}} \rightarrow x^{-7/2}\)
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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...)
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
+590 
