Sharp EL9900C EL-9900C - Page 70

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Chapter 4: Basic Graphing Features — Basic Keyboard

k

:

Calculations can be performed on the entered graph equation(s).

Press

@

k

to access. The following 6 sub-menu tools are

available:

1 Value

With this sub-menu tool, the Y value can be obtained

by entering an X value. The flashing graph cursor will

then be placed in that position on the graph. If more

than one graph equation is set, use the

{

or

}

keys to switch to the equation you wish to work

with.

Note:

If the entered X value

is incalculable, an

error message will be

displayed. Also, if the

Y value exceeds the

calculation range, then “----” will be displayed instead.

2 Intsct

With this tool, the intersection(s) of two or more graphs

can be found, where the flashing cursor will be placed.

When the intersection is found, then the X-Y coordi-

nates of the intersection will be displayed at the bottom

of the screen. If there is more than one intersection,

the next intersection(s) can be found by selecting the

tool again.

Note:

If there is only one

graph equation

entered there will be

no other graph(s) to

form an intersection,

so selecting this tool

will result in an error.

3 Minimum

Finds the minimum of the given graph, and places the

flashing cursor at that position.

Note:

If the given graph has

no minimum value,

an error message will

be displayed.

Sharp EL9900C EL-9900C - Page 70

Value, Intsct, Minimum

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