Logarithmic Functions

Summary

the inverse of the function y = ax is the function y = log ax.

two special logarithmic functions are y = log ex and y = log10x

values of these two functions are available on calculators using the ln and log buttons

Key Skills

  • recognise and know the key features of logarithmic functions
  • sketch the graphs of logarithmic functions

Vocabulary

logarithmexponential function, logarithmic function