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March 2nd, 2012, 09:34 AM   #1
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Finding the minimum average cost

The total cost, in dollars, of producing x cell phones is approximated by the function

C(x)= 2000-30x+x^/5

Find the minimum average cost.
Thank you for your help
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March 2nd, 2012, 09:39 AM   #2
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Re: Finding the minimum average cost

I'm assuming that equation is supposed to be .

Then the average cost is .

Caclulate the derivative of this function, set it equal to zero, and plug the result back into the average cost equation to get your answer.
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March 2nd, 2012, 09:44 AM   #3
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Re: Finding the minimum average cost

thanks iceman
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