Intrsect - Casio fx-7400G Programing Manual

Barry Kissane

INTRSECT

Purpose
To find the coordinates of a point of intersection of the graphs of two functions. This
can be used to solve a pair of simultaneous equations.
Operation
Start by graphing the two functions, using Y1 and Y2.
Trace to a point close to the point of intersection. Then activate the program.
The result will be given correct to three decimal places.
The program reminds you that the two functions must be in Y1 and Y2.
Test the program by finding the points of intersection of the graphs of
2
y = 2 – x and y = 1 + x.
One of the points is (0.618,1.618), while the other is (-1.618,-0.618).
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