Laws of Logarithms updated.notebook
log28 + log24 = log232
log28 ­ log24 = log22
3
log24
logbM + logbN
= logbMN
M
logbM ­ logbN = logb( )
N
logbMk
= klogbM
= 3log24
Expand in terms of log a and log b, If log a = 3 and log b = 5, Evaluate it
log10 100 a3 b2 Laws of Logarithms updated.notebook
Express as a single logarithm:
4log5m ­ 2log5n
Express as a single logarithm: 3log4 a + log4 b + 2
log3 a + 4 ­ 2log 3 b Laws of Logarithms updated.notebook
Express as a single logarithm:
2log3 x ­ log3 (x ­ 2)
Change of base formula:
2x = 9
(What 2 integers should it between?)
Laws of Logarithms updated.notebook
Evaluate: Change of base formula log b N =
log218
log5 30
Use calculator and evaluate: (3 decimals)
ln 5.2
Write Exponentially:
ln 72.8
Laws of Logarithms updated.notebook
Solve for x:
Worksheet