jamie_33: if log(x) +log(x+3)=1, the solution is? please show work
first you have to use the identity that says
log(a) + log(b) = log(ab)
so you get
log(x(x+3)) = 1
Now I am going to assume that it is base 10
10
log(x(x+3)) =10
1 [ The 10
log cancel each other out ]
x(x+3)=1
etc
This is a web page with all the log identities on it that I refer to constantly. Maybe you should bookmark it.
http://en.wikipedia.org/wiki/List_of_logarithmic_identities
+118654 
