LOGARITHMIC FUNCTION
The logarithm of a given number b to the base ‘a’ is the exponent indicating the power to which the base ‘a’ must be raised to obtain the number b. This number is designated as log a b. Hence log a b = x Û ax = b, a > 0, a1 and b>0. From the definition of the logarithm of the number b to the base ‘a’, we have an identity
This is known as Fundamental Logarithmic Identity.
GRAPH OF LOGRITHMIC FUNCTION
PROPERTIES OF LOGARITHMIC FUNCTION
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