When a graph is displayed, choose the math menu (

`fnc`

) by pressing
.Press to see more options.

Press to select Root which finds the x-intercept closest to the cursor.

Press to select Intersection which finds the point of intersection closest to the cursor.

Press to select slope which finds the derivative of a function at the cursor.

Press to select area which finds the definite integral of a function from the

Press to select shade which shades from the x-axis to the function, x ranging from the

Press to select Extremum which finds the relative maximum or minimum closest to the cursor.

Press to select F(x) which evaluates the function at the cursor location.

Press to select F ' which graphs the derivative of the function.

Press to select Tangent Line which draws a line tangent to the curve at the cursor location.

Press to select Next Equation which rotates the equation list, placing the first equation at the end and bumps the rest up one, placing the second equation at the start.

If there is more than one function all opperations such as root, slope, etc. operate on the first function in the list. Two-function opperations, such as intersect, act on the first two. To rotate through functions (for example, move a different function to the first position spot) select Next Equation by pressing in the math (

`fnc`

) menu.