I have a question, how do you evaluate the following without a calculator?
ps. log2, log3 and log5 are the bases
Do you mean:
If so, take the very first term, and set it equal to y:
This means that
You should be able to tell that , and hence .
So now you have:
Now take that term again, and set it equal to another variable, x.
Set it equal to a random variable: