Laws of logarithms, how to get them from exponents, change of base rule

Topic 1
Number and Algebra
change topic  Scientific notation and significant figures
 Arithmetic sequences
 Arithmetic series and sigma notation
 Geometric sequences
 Geometric series and more sigma notation
 Infinite geometric series
 Finance (compound interest) 1 of 2
 Finance (compound interest) 2 of 2
 Exponents
 Logarithms
 Natural logarithms and exponential functions
 Binomial expansion (Pascal’s triangle)
 Binomial expansion (nCr and factorials) 1 of 2
 Binomial expansion (binomial theorem) 2 of 2
 Proofs 1 of 2
 Proofs 2 of 2