Casio ED-WKBK-PRECALC Datasheet download pdf (Page 44)

To find the vertex of the graph:

1. Press

Ly(G-Solv)w(MAX). The

coordinates of the vertex will be displayed

at the bottom of the screen. [Note:

w(MAX)

was pressed since the vertex of this parabola

is the highest, or maximum, point. If the graph

of the parabola opened up, the vertex would be

the lowest, or minimum, point and you would

have chosen e(MIN).]

Explore the behavior of the split-defined function g(x) = .

⎪

⎩

⎪

⎨

⎧

−

>−+

<−+

1.5x5,3xx

1.5x4,

1.5x5,3xx

To graph a split-defined function:

1. From the Main Menu, highlight the GRAPH

icon and press

l or press 3.

2. To delete any previous equations, highlight

the equation and press

w(DEL)q(Yes.)

3. Enter each branch of the split-defined (piece-wise)

function in its own Y= slot, then create the

restrictions by putting the lower and upper bounds

in brackets.

For Y1, press

nfs+3f-5,L

+n10,1.5L-l

For Y2, press n4,L+1.5,1

.5L-l

For Y3, press

nfs+3f-5,

L+1.5,10L-l

4. Press u(DRAW) to view the graph of the functions.

Activity 4 • Calculus with the Casio fx-9750GII

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Casio ED-WKBK-PRECALC Datasheet Page 44

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