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August 30, 2025, 09:35:19 pm
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Author Topic: Integration Question  (Read 1319 times)  Share 

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wildareal

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Integration Question
« on: July 16, 2010, 12:12:26 am »
A long trough whose cross-section is parabolic is 1 and a 1/2 metres wide at the top and 2 metres
deep. Find the depth of water when it is half-full.
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Wildareal '11

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brightsky

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Re: Integration Question
« Reply #1 on: July 16, 2010, 12:38:02 am »
Turn the trough on its side and sketch the sideways parabola on the Cartesian plane, let's say with the turning point at (0,0) and the endpoints at (2, 3/4) and (2, -3/4). Let the point on the x-axis at which , where is the equation of your sideways parabola.

Should be just a matter of computation now. :)
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bar0029

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Re: Integration Question
« Reply #2 on: September 23, 2010, 03:41:43 pm »
where can i find out what was the cut off for an A+ etc. for this exam?
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