Root Option

The root of a function is found by using the root option.

While viewing a graph, press to view the math menu.

Move the cursor near the desired root and press to select the root option.

The x-coordinate of the root appears at the bottom of the screen and is added to the stack. Here, the root is about 1.77.

Note: If there is more than one function the HP will find a root only on the first function. To rotate through functions select Next Equation by pressing in the math menu. The first equation will be put at the end of the list and all others move up one spot.