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    It's question 7

    Any help would be much appreciated thank you!!
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    For the first part you would need to differentiate each term by multiplying by the power then subtracting one from it. Then you would have to substitute 1 into your answer.

    For the second part, to get the second derivative, you would use your answer from the first part: the equation, then differentiate it the same was as above, then sub 1 in to get the final answer.

    And for part C they're probably looking for a comment on the accuracy of using the equation but I'm not quite sure.

    Tried to give you help without just giving the answers away
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    Thanks for the reply, I understand how to find the first and second derivative, it's just the interpreting the values in the context that I' struggling if anyone could help me with that?
    Thanks
 
 
 

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