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    I came across this question :

    Solve to find x.

    4^x ln4 - 2^(x-1) ln2

    To find x , I did LOGS method of logging both sides and took it from there, but the mark scheme is giving a different method (question 7c see the link)

    http://www.school-portal.co.uk/Group...urceId=3992050

    would i be OK , i did get -2 for x?
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    (Original post by laurawoods)
    I came across this question :

    Solve to find x.

    4^x ln4 - 2^(x-1) ln2

    To find x , I did LOGS method of logging both sides and took it from there, but the mark scheme is giving a different method (question 7c see the link)

    http://www.school-portal.co.uk/Group...urceId=3992050

    would i be OK , i did get -2 for x?
    Its fine. If your method is correct, then you can do it however you want
 
 
 
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