TI-83 Plus Function Graphing 152
3. Press † or }, if necessary, to move the cursor to the second
function, and then press Í.
4. Press ~ or | to move the cursor to the point that is your guess as to
location of the intersection, and then press Í.
The cursor is on the solution and the coordinates are displayed, even if
CoordOff format is selected. Intersection is displayed in the bottom-left
corner. To restore the free-moving cursor, press |, }, ~, or †.
dy/dx
dy/dx (numerical derivative) finds the numerical derivative (slope) of a
function at a point, with H=1âL3.
To find a function’s slope at a point, follow these steps.
1. Select 6:dy/dx from the CALCULATE menu. The current graph is
displayed.
2. Press } or † to select the function for which you want to find the
numerical derivative.
3. Press | or ~ (or enter a value) to select the X value at which to
calculate the derivative, and then press Í.
The cursor is on the solution and the numerical derivative is displayed.