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    lemon14's Avatar
    lemon14 Posts: 143, Reputation: 9
    Junior Member
     
    #1

    Mar 22, 2011, 11:21 AM
    What to do next?
    I came across this exercise and I don't know what to do next (or if I solved it correctly to this point)





    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Mar 22, 2011, 11:55 AM

    You are making the mistake of assuming that if



    then


    which is not right.

    Rather than using brute force I suggest you try a few numbers that look like reasonable candidates. You want things to cancel out, and at first glance it would seem that trying values for x like x = 3, or x=2 may be promising. You can also try x = 1, since 1 raised to a power is always 1 and log of 1 is always 0. Post back with what you get.

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