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Thread: A maths problem

  1. #21
    WiiChat Member Cadbury's Avatar
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    Quote Originally Posted by Oceanic
    you are trying to differentiate something with two variables, x and y. Therefore, you need to differentiate with respect to either x or y, not both (this is partial derivatives)
    So if you differentiate with respect to x, then your answer is ye^xy and if with respect to y, your answer will b e xe^xy, using the chain rule.

    I'm not sure if you are disagreeing with me, but what I posted earlier is the right answer.
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  3. #22
    The Cake is a Lie Oceanic's Avatar
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    Quote Originally Posted by Cadbury
    I'm not sure if you are disagreeing with me, but what I posted earlier is the right answer.
    I didn't read that post on my first look through, you never said in your original post that the equation equaled 5. My answer was correct based on what you told us in your first post, that's why my answer is different from yours. You cant forget to tell us information

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  4. #23
    WiiChat Member Cadbury's Avatar
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    When you differentiate the 5 disappears and becomes irrelevant, so it doesn't matter whether the 5 was there or not.
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  5. #24
    Senior Member Napalmbrain's Avatar
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    Cadbury, you're quite correct but you forgot to mention you specifically wanted dy/dx, not differentiate e^xy.



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  6. #25
    Comp Sci's Smurfette kissoff182's Avatar
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    Oops.
    Last edited by kissoff182; 02-28-2007 at 09:33 AM.
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