Calculus help fast, its very easy but i'm not sure

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$5.00 Calculus help fast, its very easy but i'm not sure

From Mathematics: Calculus
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Due on Apr. 25, 2008
Asked on Apr 24, 2008 at 4:42:43PM

Q:
A 1-km race track is to be built with two straight sides and semi-circles at the ends. Find the dimensions of the track that encloses the maximum area.

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sudipta

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$8.50 Fully solved with all steps shown

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Posted on Apr 24, 2008 at 6:13:34PM

A:
Preview: ... e for t ...

The full tutorial is about 6 words long plus attachments.

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Track.doc (28K)

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modulo51
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$5.00 Solution using derivative, with details...

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Posted on Apr 24, 2008 at 6:31:59PM

A:
Preview: ... end and lengths of straight segments then differentiating to find a maximum. Let p be the perimeter = 1 km p = 2*l + 2*pi*r solve for l: l = (p-2*pi*r)/2 Let A be the area: A = pi*r^2 + 2 ...

The full tutorial is about 171 words long .