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February 28, 2015

Homework Help: calculus

Posted by MathisFrustrating on Monday, May 2, 2011 at 10:41pm.

Evaluate integral of e^x^(1/2) / x^(1/2)
I've looked at the answer but I don't understand what people do in their steps.

When I substitute x^(1/2) for u, I get:

2du = 1/x^(1/2) dx

But what do you do with the 1/x^(1/2) dx? It just disappears in the solutions I've seen people give.

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