A logarithm is the of an exponential function. In simple terms, it asks the question: "To what power must we raise a base to get a certain number?" For example, the logarithm base 10 of 1,000 is 3 , because 1. Fundamental Definition
The mathematical relationship between an exponential form and a logarithmic form is: Logarithms and Logarithmic Functions
by=x⟺logb(x)=yb to the y-th power equals x ⟺ log base b of x equals y (Base) : Must be positive and not equal to 1. (Argument) : Must be positive ( A logarithm is the of an exponential function