Casio FX-CG10 Software User's Manual page 188

Example Graph the two functions shown below, and determine the point of
intersection between Y1 and Y2.
Y1 =
• You can calculate the point of intersection for rectangular coordinate graphs (Y=
and inequality graphs (Y
• Either of the following can cause poor accuracy or even make it impossible to obtain
solutions.
- When a solution is a point of tangency between two graphs
- When a solution is an inflection point
u To determine the coordinates for given points
1. Draw the graph.
2. Select the function you want to perform.
!5(G-SOLVE) 6(g)1(Y-CAL) ...
3. If there are multiple graphs on the graph screen, one of them will start flashing. Use f and
c to move the flashing to the graph you want to select and then press w.
x
4. Input the given -coordinate value or
Press w to calculate the corresponding
Example Graph the two functions shown below and then determine the
coordinate for
Y1 =
• When there are multiple results for the above procedure, press e to calculate the next
value. Pressing d returns to the previous value.
• The X-CAL value cannot be obtained for a parametric function graph.
x x 2
+ 1, Y2 =
f x f x
( ), Y ( ), Y
6(g)2(X-CAL) ...
y
-coordinate value.
x
= 0.5 and the
x x x x
+ 1, Y2 = ( + 2)(
5-56
f x f x
( ) or Y ( )) only.
y
-coordinate for given
x
-coordinate for given
y
-coordinate value or
x
-coordinate for
– 2)
f x
( ) type)
x
y
x
-coordinate value.
y
-
y
= 2.2 on graph Y2.