What is Logarithm of a real number ?

the logarithm is the inverse function to exponentiation. That means the logarithm of a given number x is the exponent to which another fixed number, the base b, must be raised, to produce that number x.

The natural logarithm can be defined for any positive real number a as the area under the curve y = 1/x from 1 to a (with the area being negative when 0 < a < 1). The simplicity of this definition, which is matched in many other formulas involving the natural logarithm, leads to the term "natural".

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step-by-step explanation:

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3

step-by-step explanation:

because where the point where the 2 lines intersect is (3,-1) the x value is 3