Arithmetic Course/Number Operation/Log
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Arithmetic Course
|
Number Operation
Log
If there is a power of ten, 10
b
= a, then
log
10
a = b which is equivalent to log a = b
Rules
l
o
g
a
+
l
o
g
b
=
l
o
g
a
b
{\displaystyle loga+logb=logab}
l
o
g
a
−
l
o
g
b
=
l
o
g
a
b
{\displaystyle loga-logb=log{\frac {a}{b}}}
