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Old 10-26-09, 05:11 PM   #1
phantomcow2
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rcos(t)*rsin(t)*r*dr*d(t) polar coordinates

Okay, so I have a calc exam this Friday. He said he wont be asked to prove that double integral of f(x,y) is equal to rcos(t)*rsin(t)*r*dr*dt in polar coordinates, but that it's fair game to ask some theoretical question about it. We didn't go into a lot of detail about this in class. I believe he will ask about the additional "r" that is tagged to the end; there's nothing else he can really ask about it in my opinion. Why does this "r" exist?
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Old 10-26-09, 05:21 PM   #2
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Never mind this, a friend just linked me to a video that explains it all.
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Old 10-26-09, 05:31 PM   #3
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Why does this "r" exist?
What is this, philosophy class?
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Old 10-27-09, 07:33 PM   #4
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This is why I quit after Calc 242, switched to Biology, then English, which I now teach.
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Old 10-28-09, 09:26 AM   #5
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I've slept too many times since then.....
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Old 10-28-09, 09:27 AM   #6
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i've slept too many times since then.....
+1....a few drinks here and there too.
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