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  1. R

    help with first order derivative

    lifesaver thanks a lot! yes this is tertiary stuff but i found a similar question on google posted in this sub forum so decided to post here :P
  2. R

    help with first order derivative

    Hi there, my differentation is hopeless and and need help with this question, any help much appreciated! link to problem here, apprently too large to attach (104kb) http://iforce.co.nz/i/cjdv1cp2.jpg
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