HL 4.2 - Definition and properties of logarithms
SL 2.9: Logarithmic functions and their graphs: f(x)=\log_a x,\;x>0 , f(x)=\ln x,\;x>0 In the previous section you studied exponential functions. In the same way that exponential functions describe many real-life processes, so do logarithmic functions. In addition, whenever we study an operation or function in mathematics, it makes sense to study its inverse. In this case, the inverse of an exponential function is a...