**I. Entering the Function
in the Graph Window**

F. Logarithmic FunctionsThe TI-83 and the TI-84 will graph the natural logarithm, y=ln x, and the common logarithm, y=log x. However, graphing functions in other bases requires use of the Change of Base Property.

1. Natural Logarithms and Common LogarithmsThese functions can be entered directly. Parentheses must be placed around the function terms.

Example: Enter the functions shown.

2. Other BasesFunctions such as cannot be entered directly so you will have to use the Change of Base Property to rewrite the function as .