Saturday, March 24, 2012

Logs and Exponents

-You can use logs to write exponents. 
Written as log: logbx=a
Written as exponent= b^a=x

-When solving a log, you write it as an exponent

Example 1: log3 5= 56
3^56=5

Example 2: log2 3=6
2^6=3

Example 3: log7 9=12
7^12=9

-If the base is written for log, its 10. 
-The base of ln is always e

-The log cancels, if the base and other number are the same. 
Example 4: log3 3^2
log3 3^2=2

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