Sharp EL-9400 manual EL-9650/9600c/9450/9400 Graphing Calculator, Enter y = √ 6 - x 2 + 2x for Y1

EL-9650/9600c/9450/9400 Graphing Calculator

Step & Key Operation	Display	Notes
(When using EL-9650/9600c)	(When using EL-9650/9600c)
*Use either pen touch or cursor to operate.

2-2Enter y = √ 6 - x 2 + 2x for Y1,

y = Y1 - 2 for Y2, and y = -Y1 -2 for Y3.

Y=	CL	2nd F	√	6	— X/ /T/n
x 2	+	2	X/ /T/n	ENTER	*	CL

VARS A * ENTER 1 * —

2 ENTER *

(-) VARS ENTER 1 * — 2

2-3"Turn off" Y1 so that it will not graph.

* ENTER *

2-4View the graph.

GRAPH

2-5Adjust the screen to see the bottom part of the circle using the Rapid feature.

EZ * ENTER *

ENTER * * ENTER * ENTER *

Notice that if you enter

y = √ 6 - x 2 + 2x - 2 for Y1 and y = - Y1 for Y2, you will not get the graph of a circle because the “± ” does not go with the “-2”.

Notice that “=” for Y1 is no longer darkened. You now have the top portion and the bottom portion of the circle in Y2 and Y3.

Wait until the graph is dis- played after each operation. (It takes few seconds to graph)

2-6View the graph in the new window.

GRAPH

Graphing circles can be performed easily on the calculator display. Also, the Rapid Zoom feature of the EL-9650/9600c/9450/9400 allows shifting and adjusting display area (window) of a graph easily.

10-2