Definition : Loagarithms
If a^(n) = x, then: loga(x) = n, where a >0 ; a =/ 1 and x > 0
The logarithm of a number is the value to which the base must be raised to give the number i.e. the exponent. From the first example of the activity log_2 (16) means the power of 2 that will give 16. As 2^4=16 we see that
log2(16) = 4
