Solve the equation
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I seem to be having trouble working out this one... can someone show me what I did wrong? The x's cancel eachother out... and I don't know where went wrong. (By the way, x is a whole number)
Hi, DavdM, log is NOT linear function : log(a+b) is NOT equal to log(a)+log(b). Here, we can write : finally,
Originally Posted by thorin I'm not getting where you got the (3-1) from. Please to explain?
Oh i get it.
Last edited by DavidM; Aug 14th 2010 at 03:15 AM.
Another way to do it: by the laws of exponents, and . The equation becomes so that . Since , so we have, finally, and x= -2.
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