Casio CFX-9800G-w Owners Manual - Page 113
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UPC - 079767128685
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ERSCT) (This puts the unit into standby waiting for selection of a graph.) ISECT Specify Graph A. *Pressing 1 changes " • " into • or specification of the first graph. Y=X(X+2) (X-2) ISECT Specify the second graph (Graph C, here) to determine the points of intersection. Y=X 2 Y=X+1 •Use C and ® to move " • " on the second graph. •Intersections are found starting from the left. 74=-0.618033 Yr0.3BIBEE 0 •The next intersection to the right is found. If there is no intersection to the right, nothing happens when you perform this operation. Y=X 2 Y=X+1 ISECT W.EIB0339 V=2.6160339 •You can use to move back to the left. *If there are only two graphs, pressing ILI(ISCT) direct) displays the intersections (selec- tion of the graph is not required). -190- •Determining a Coordinate (x for a given yly for a given x) Example To determine the y-coordinate for x = 0.5 and the x-coordinate for y = 1.8 in the graph y = x (x + 2) (x -2): E33LIP) E(Y-CA) Y=X+1 Specify a graph. El V-CAL •At this time, the unit waits for input of an xcoordinate value. Input the x-coordinate value. ibm Determine the corresponding y-coordinate value. E3 V-CAL rx.o. 5_ Y=X(X+2)(X-2) -191- V-CAL V::-1.B15 rii CA Idx