Casio fx-CP400 User Manual page 172

u To solve an equation
1. On the Numeric Solver window, input an equation.
• Here, we will input the equation =
= 2.
2. Press E.
3. Input 2 as the values for variable (to the right of =).
4. Since we want to solve for , select the option button to the left of variable
(so the button next to the variable becomes
5. Tap 1.
• This displays the Result dialog box with the calculation result. Tap [OK] to
close the dialog box.
6. Input 0 as the values for variable (to the right of =).
7. Tap 1.
• Though the solution of
displayed is the decimal form of 2, which is near the last solution
obtained ( = 2).
To obtain the other solution, change the Upper value (to 0, for example) and
then tap 1.
0901 is the time it would take for an object thrown straight up with initial velocity to reach height . Use the
formula =
seconds. Gravitational acceleration is
Tip
• If ClassPad judges that the displayed results are not converging sufficiently, it displays the message "Did not converge.
Do you wish to continue the calculation?" Tap [Yes] to continue, or [No] to cancel the calculation.
• If the message "Can't solve!" appears on the display, perform either (or both) of the operations below and then tap 1
again.
- Tap a - [Initialize Bound], or manually change the "Lower" and "Upper" values.
- Change the convergence range. See "To change the convergence range" below.
u To change the convergence range
a
1. Tap - [Convergence] to display the Convergence dialog box.
2. Enter an integer in the range of 1 to 13.
• A smaller value increases the allowable error range, and lessens the
chance of a "Can't solve!" error. If a calculation causes a "Can't solve!"
error, try changing this setting to a smaller value.
3. Tap [OK] to apply the setting and close the dialog box.
• The new setting value will be shown in the status bar (page
2 − 2, and solve for when = 0 and
2
− 2 = 0 is = ± 2, here the value that is
− 1/2 2 to calculate the initial velocity for a height of
).
2
= 9.8 m/s .
).
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Chapter 9: Numeric Solver Application
= 14 meters and a time of = 2
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