Loga b = logc b ÷ logc a (inversion formula)
Loga m+loga n = loga (m× n) (logarithmic addition equals real multiplication)
Loga m-loga n = loga (m÷n) (logarithmic subtraction equals real division)
logA^B×logB^C×logC^D=logA^D
Loga MB n = (n÷m) loga b (remember to use it often)