Logarithm

Definition

100

log₂16

4

200

log₄0.25

-1

300

log₃√27

1.5

400

log_√327

6

500

log_√50.008

-6

Equation

100

log₃x=2

9

200

log₂x=-2

1/4

300

log_x32=5

2

400

log_x0.125=-1

8

500

log₇x=-0.5

1/√7

Identities

100

log₂3+log₂7

log₂21

200

log₂12+log₂5-log₂4

log₂15

300

log9-2log2

log 9/4

400

2 log₅7+log₅3 - log₅2

log₅73.5

500

3 log₃2+2 log₃5 - log₃8

log₃25