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confused about something first principles and derivitives Watch

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    please see attatched
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    I could guess but it would help if you can tell me what "n" is.

    Is there a section of the notes before this that you haven't posted?
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    Difficult to tell with such scant detail, but I suspect that you have to have to be able to differentiate x^n from first principals for rational n.
 
 
 
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