Question

how do you figure out the approximate value of a log without using a calculator?

Answer 1

anyone?

Answer 2

You know what a log is in relationship to an exponent?

Answer 3

For simple logs, you can rely on the relationship to help you find out the answer. Here is a reference:
http://www.purplemath.com/modules/logs.htm

Answer 4

hw do you approximate the value of log 72?

Answer 5

So base 10?

Answer 6

http://mathforum.org/library/drmath/view/68387.html