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August 26th, 2010, 02:03 PM   #1
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Partial differential:Presentation function

My prof talked about "presentation functions". According to his definition, *edit (His definition is "The function F") He gave an example:



If we take


Then the presentation function is

I understand that problem but I am not sure how to write the presentation function for this problem:


Not sure how the exponent and the trigonometric function would look like. I am not sure about the trigonometric function. I do have some thought about the exponent sign. I think if it was for a different situation, say , then it would be . So for the problem above, it would be just be because it's like a coefficient or a a constant or a given function of t. I don't know if that make sense. Can someone please clarify this for me. Thanks in advance.
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