The logarithm to base a of a number P, is the index x to which a must be raised to be equal to P.
Thus if P = ax, then x is the logarithm to the base aof P. We write this as x = log a P. The relationship logaP = x and ax=P are equivalent to each other.
ax=P is called the index form and logaP = x is called the logarithm form
Write each of the following index form in their logarithmic form
Solution
Log2 64 = 6
Log255=1/2
Log41/256 = -4
27 = 128
10-2= 0.01
1.52 = 2.25
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