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April 18, 2015

Homework Help: calculus-domain

Posted by mary on Thursday, March 15, 2012 at 8:34pm.

Hello, I would greatly appreciate your input.

I just need some reassurance that I'm going about this question the right way. I am to find out where h(x)=x*(x-1)^(1/3)is increasing and decreasing. so after I did some solving I found my critical points to be x=(3/4) and x=1.

I tested for some values and stated that h is decreasing at the following intervals: (-∞,3/4) and (3/4,1) and is increasing at (1,∞).

Is this correct? I'm just confused because when I check on a graphing device, it does not show the functions x intervals from (-∞,1), but I thought that this function would have x as a set of real numbers. Am I wrong? If so, please tell me the correct way to go about this.

Thank you for your time. :)

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