Logs!

You can write a log as an exponent, and an exponent as a log.

logb(x) = a then, b^a=x

To solve a log you write as an exponent.

If no base is written for log, it is implied to be 10.

The base of ln is always e

If b and x are equal, they can cancel.

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Ex.1:

log 10,000=
log 10,000=x
10^x=10,000

x=4

Ex.2:

log2 4=x
2^x=4
x=2