Graphing Activities

8/12/2019 Graphing Activities

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Finding Extrema Graphically Casio, Inc. For Classroom Use Only

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1. From the Main Menu, select the GRAPH Icon.

2. Enter the function to be graphed into theappropriate Y= slots. Press EXE to store.

3. Press F6 (DRAW) to view the graph of

the function.

1. Press Y=on the keyboard and enter the functionsto be graphed into the appropriate slot.

2. Choose an appropriate window and produce thegraph by pressing GRAPH.

3. Press 2ndCALC (F4) key to access the calculatingfunctions.


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4. To find the relative maximum point(s):

Press F5 (G-Solv) then F2 (MAX). The leftmost relative maximum value will bedisplayed first.

5. To find the relative minimum point(s):Press F5 (G-Solv) then F3 (MIN). The leftmost minimum value will be displayed first.

7. Press the right arrow to look for thenext relative min, which it will find, anddisplay. However, if there is no additionalvalue it will come back to the one it justfound; confirming it is the only one. (If thevalue is not in the horizontal graphingwindow, i.e. the specific domain, thecalculator will NOT find it.)

4. You can both scroll down to item #4 and press

ENTER , or you can press 4 directly to activate themaximum function. Once its active you must gothrough the following steps:

You must capture a left bound to the extremaby moving the cursor and pressing ENTER .

You must then capture a right bound to theextrema by moving the cursor and pressingENTER .


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You must then press ENTER another time totell the calculator to actually do the calculation

and find the extreme point.

Note: if you do not correctly capture the regionsurrounding the extremum, it will still give you ananswer. The TI is not actually reporting a relativemin or max, its reporting the minimum ormaximum value based on your capture region.

5. Then find the minimum you must replicate theentire process. The screens are provided to show theprocess and the result:

THE CASIO ADVANTAGE

Same functionality, but greaterefficiency (fewer keystrokes)

No danger of capturing an undesiredvalue

Cost-conscious: the fx-9750GII isapproximately half the price ofcomparable TI products


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Finding Intersections Casio, Inc. For Classroom Use Only

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2. Enter the functions to be graphed into the

appropriate Y=slots. You must press EXE tostore each function.

3. To view the graph press F6 (DRAW).

4. To find the intersection(s), press F5 (G-Solv).The left most intersection will be displayed first.

1. Press Y=on the keyboard and enter thefunctions to be graphed into the appropriate slot.

2. Choose an appropriate window and producethe graph by pressing GRAPH.

3. Press 2nd CALC (F4) key to access thecalculating functions.


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5. Press the right arrow on the Replay keypad

to search for the next intersection point.

.

4. You can both scroll down to item #5 and

press ENTER , or you can press 5 directly toactivate the maximum function. Once its activeyou must go through the following steps:

Once its active you must press ENTER tochoose the first function, then ENTER a secondtime to choose the second function.

5. Use the arrow keys to move the tracer towardthe intersection you want and press ENTER .

6. It will then display the intersection.


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7. To find the second intersection point you must

replicate the entire process. Press 2nd CALC toaccess the calculating functions.

8. Choose intersections again. Press ENTER twice to choose the functions, then move towardthe other intersection. Press ENTER to display.

THE CASIO ADVANTAGE

Same functionality, but greater efficiency(fewer keystrokes)

Ease of repetition (no need to repeat theentire process)

Instructive: students still must analyzeproper domain

Cost-conscious: the fx-9750GII isapproximately half the price ofcomparable TI models


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Finding Roots Graphically Casio, Inc. For Classroom Use Only

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2. Enter the function to be graphed into theappropriate Y= slot and press EXE .

3. To view the graph, press F6 (DRAW).

4. Press F5 (G-Solv) then F1 (ROOT) tocalculate the root. The coordinates of the left-most root will be displayed first.

1. Press Y=on the keyboard and enter thefunctions to be graphed into the appropriate slot.

2. Choose an appropriate window and producethe graph by pressing GRAPH.

3. Press 2ndCALC(F4) key to access the

calculating functions.


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5. Press the right arrow on the Replay keypad

to search for the next root in the viewabledomain. (If the function has additional roots notwithin the current window settings, they will notbe found and displayed.)

4. You can both scroll down to item #2 and press

ENTER, or you can press 2 directly to activate thezero (root) function. Once its active you must gothrough the following steps:

You must capture a left bound to the rootby moving the cursor and pressingENTER.

You must then capture a right bound to theroot by moving the cursor and pressingENTER.


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You must then press ENTER another time

to tell the calculator to actually do thecalculation and find the root.

5. To find additional roots you must replicate theentire process each time. Example: just thescreens for finding the right root:

THE CASIO ADVANTAGE

Same functionality, but greater efficiency(fewer keystrokes)

Ease of repetition (no need to repeat theentire process)

Instructive: students still must analyzeproper domain

Cost-conscious: the fx-9750GII isapproximately half the price of thecomparable TI products


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Graphing Activities

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