Press .

To change a setting, use the cursor to highlight the desired option and press .

**Normal Sci Eng** indicates if the numbers are to be displayed in a normal,
scientific, or engineering format.

**Float 0123...** indicates whether the decimal is floating and the number of digits displayed.

**Radians Degree** sets the calculator to interpret angles as radians or degrees.

**RectC PolarC** specifies rectangular, or polar display of complex
values.

**Func Pol Param DifEq** indicates the type of graph.

**Dec Bin Oct Hex** indicates what base the TI-86 uses to
display values, base 10, 2, 8, or 16.

**RectV CylV SphereV** specifies whether vectors are displayed in rectangular,
cylindrical, or spherical form.

**dxDer1 dxNDer** specifies the method for calculating derivatives
for the graphing functions, numerical or exact.