Solve the equation
Follow Math Help Forum on Facebook and Google+
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 :
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; August 14th 2010 at 02:15 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.
View Tag Cloud