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    please help me do this question. I can't seem the get the result the mark scheme sais. I differentiate 4 * k^x as (4/2x) *k^2x . I s that correct?
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    Sorry you've not had any responses about this. Are you sure you've posted in the right place? Here's a link to our subject forum which should help get you more responses if you post there.

    You can also find the Exam Thread list for A-levels here and GCSE here. :dumbells:


    Just quoting in Puddles the Monkey so she can move the thread if needed
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    (Original post by TheFranco)
    please help me do this question. I can't seem the get the result the mark scheme sais. I differentiate 4 * k^x as (4/2x) *k^2x . I s that correct?
    No.

    Write k^x = e^{x \ln k} and then differentiate that using the normal rules of differentiating exponentials, remember that k is just a constant.
 
 
 

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