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    (Original post by jcd)
    You have to be joking. The likelihood of me differentiating that correctly is so low that it would just waste my time!
    Why would it waste your time and not ours? At least try to do it - you're going to need to be able to differentiate expressions such as that for your exam aren't you?
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    (Original post by jcd)
    Is the answer

    ½(eax.sinx - aeax.-cosx + a2) ?
    No, the answer is in the second post :O Trust me its right.
    --------------
    http://www.maths.abdn.ac.uk/~igc/tch...nt/node51.html

    its on here too...
 
 
 
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