Finding Roots Graphically
Kevin Fitzpatrick
CALCULATORS: Casio: fx-9750G Plus & cfx-9850G Series
TI: TI-83 Plus, TI-84 Plus & TI-83/TI-84 Plus Silver Editions
CASIO GRAPHING CALCULATORS
TI GRAPHING CALCULATORS
1. Go to the Main Menu and choose GRAPH
(icon #5)
1. Press Y= on the keyboard and enter the functions
to be graphed into the appropriate slot.
2. Enter the function to be graphed into the
appropriate Y= slots.
2. Choose an appropriate window and produce the
graph by pressing GRAPH.
3. Choose an appropriate window and produce the
graph by pressing F6(DRAW).
3. Press 2nd CALC(F4) key to access the
calculating functions.
4. Press F5 (G-Solv) then F1 (ROOT) to begin the
calculation. The calculator will start "looking"
for the left most root and display it.
4. You can either scroll down to item #2 and press
ENTER, or you can press 2 directly to activate
the zero (root) function. Once it’s active you
must go through the following steps:
• You must capture a left bound to the root by
moving the cursor and pressing ENTER.
5. Press the right arrow to look to the right for
the "next" root, which it will find, and
display.
Finding Roots Graphically
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© Casio, Inc. • For Classroom Use Only
Finding Roots Graphically
continued
CALCULATORS: Casio: fx-9750G Plus & cfx-9850G Series
TI: TI-83 Plus, TI-84 Plus & TI-83/TI-84 Plus Silver Editions
CASIO GRAPHING CALCULATORS
TI GRAPHING CALCULATORS
6. If there are more roots to find that are visible in
the window continue the process by pressing the
right arrow key. Each one will be displayed.
•
You must then capture a right bound to the
root by moving the cursor and pressing
ENTER.
•
You must then press ENTER another time to
tell the calculator to actually do the
calculation and find the root.
5. To find additional roots you must replicate the
entire process each time. Example: just the
screens for finding the right root:
THE CASIO ADVANTAGE
•
•
•
•
•
Same functionality
Greater efficiency, much fewer keystrokes
Move more directly to the desired result
No danger of capturing a value that is not
desired
The fx-9750G Plus costs approximately 1/2 the
price of the TI-83 plus.
Finding Roots Graphically
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© Casio, Inc. • For Classroom Use Only