20 Most Recent Casio FX-9750GPlus Calculator - Page 8 Questions & Answers

A simple procedure THAT MAY REVIVE the calculator is to reset the calculator by pressing the RESET button on the back. Use a straightened paper clip to press the recessed button.

If you want the All Clear function, press the AC key. If you want to turn the calculator off, press SHIFT then AC. The functions marked above the keys are the shifted functions of that key.

To draw graphs.

1. Turn calculator ON (isn't that obvious?)
2. If you see no icons, press [MENU]
3. Use arrow to move focus on GRAPH and press [EXE]
4. By default, the graph type is Y=
5. Enter your equation on line Y1=, use the [X,theta,T] key to enter the X-variable
6. Press [EXE] when finished entering a function.
7. Enter other functions if you want.
8. When done, press [F6:Draw].
9. If you do not see a big portion of the curve you can press [SHIFT] [F2:Zoom] and select [F5:Auto]

I am enclosing screen captures. The screens you see may not look exactly as on the FX-9750G, but all menu commands you have to execute are accessed by the same key sequences.






This last one is obtained with the Zoom: Auto

I assume you want to solve a linear system of three equations i three unknowns (x,y,z).

1. Turn calculator ON.
2. If you do not see icons, press [MENU] key.
3. Use arrows to move focus to [EQUA] and press [EXE]
4. In new screen select F1: Simultaneous
5. Select the numbewr of unknows (in your case 3): Press [F2:3]
6. A table opens: it has 3 rows and 4 columns
   
7. Enter the coefficients in first equation on first line (a1, b1,c1) and the constant term d1.
8. Enter the other coefficients and the constant terms at the right places, pressing [EXE] after each entry.
9. When finished coefficients and constant terms, press [F1:Solv]
10. The solution vector (X,Y,Z) is displayed on next screen.
11. Note: if the coefficients are integers, it is possible that the solution vector will be displayed as mixed fractions (exact solutions),
    
12. If not, the solution vector will be in decimal format.

Error messages are important to help solve the problem.
Try the following instructions to draw the function Y=5X+2
but first Reset the calculator by pressing the RESET button on back of calculator. I do not want you to run into problems created by old settings.

1. Turn calculator ON. If you do not see several icons press [MENU].
2. Use arrow to select the [GRAPH] application and press [EXE].
3. In the entry screen, the line with Y1= is highlighted. If it is not, use arrow to highlight it.
4. Press the right arrow, the highlighting disappears leaving you with Y1= and the blinking cursor.
5. At the position of the cursor type 5 then press the [X, theta,T] key, under the [ALPHA]. On the screen appears 5X, complete your equation by typing [+] 2
6. Press [EXE] to store function.
7. If you want to draw other functions, it is time to do so on that screen.
8. When done, press [F6:Draw].
9. If the screen does not show a lot of the function, you can use the arrow keys to pan (move the center of the graph. You can pan Up, Down, Left, or Right.
   
10. You can also press [SHIFT][V-Window] to set the window limits.

There is a program on the Casio website. Here is the link if you want to follow it.

All right, I will show you how to draw a simple function such as y=5*X+2. The method is the same reagrdless of the complexity of the function.

1. Turn calculator ON. If you do not see several icons press [MENU].
2. Use arrow to select the [GRAPH] application and press [EXE].
3. In the entry screen, the line with Y1= is highlighted. If it is not, use arrow to highlight it.
4. Press the right arrow, the highlighting disappears leaving you with Y1= and the blinking cursor.
5. At the position of the cursor type 5 then press the [X, theta,T] key, under the [ALPHA]. On the screen appears 5X, complete your equation by typing [+] 2
6. Press [EXE] to store function.
7. If you want to draw other functions, it is time to do so on that screen.
8. When done, press [F6:Draw].
9. If the screen does not show a lot of the function, you can use the arrow keys to pan (move the center of the graph. You can pan Up, Down, Left, or Right.
   
10. You can also press [SHIFT][V-Window] to set the window limits.

To calculate the reciprocal of a numerical value you can use

1. 1 / numerical value or
   
2. use the key sequence [SHIFT] [ ) ] (X to -1), if the number is already displayed (stored in answer Ans memory)

Example: calculate the reciprocal of 13. Must be in Run Mode

1 [/] 13 [EXE] result is 0.07692307692 or

13 [EXE] to have 13 in Ans memory (displayed) and [SHIFT][ ) ] [X to -1] [EXE].

For such a simple number as 13, calculating its reciprocal the second way seems ridiculous, but if the number is already displayed the second method is the only efficient one if you do not want to copy the result on a piece of paper and retype so as to calculate its reciprocal.

Enter your data in List1 and List2. While data is in display

1. recall the setup screen by pressing [SHIFT][MENU] (SETUP)
2. Use down Arrow to scroll down the list of setup options to highlight "Residual List"
3. Press [F2] (LIST)
4. Press [F3] to select List3 as the destination list for the residuals.
5. After you perform your regression calculations, the residuals will be in List3.
   

You might want to check this article on the casio site. t shows you how to calculate the area between the two bounds. But to graph it?

First of all the manual. Here is a link to the download page of all chapters.
To get the value of "e" the base of the natural logarithm you calculate the value of the exponential e^x function for x=1, in other words
value of "e"=e^(1)=2.718281828

To get the square you can use (e(^1))^2, but that is clumsy.
You can use the rule about exponential functions (e^a)*e^b)=e^(a+b)
Thus (e^1)*(e^1)=e^(1+1)=e^2

To access the exponential function press [SHIFT][LN]
and the square of "e" is obtained by pressing
[SHIFT][LN] 2 [ENTER]
The result is 7.389056099.

The manual is 455 page long. I surmise that nobody has the time to read it to you. Start by reading the Getting Acquainted (1st) chapter. Do the manipulations. With faithful practice you will soon master the basics.
If you do not have the manual, here is a link to the page where you can find all chapters of the book

While you study the manual, if you come across a situation or example that you do not understand, feel free to post a question, and one of us will try to help you.

Good Luck! Don't give up.

It's not on a key but in a menu. It's in the Math menu, the Complex menu, and the Matrix menu, depending on the type of the argument.

Use the Shift key or the Alpha key to type letters. If there are two symbols near a key,on the body of the calculator, the symbol to the left is accessed with SHIFT, the one to the right with ALPHA. On certain calculators symbols are color-coded.

I am puzzled by the (-2,2) after the equation. I suspect it is the coordinates of some point. But I won't push the matter further, and I will just ignore that info. I am no mind reader.

1. Turn calculator ON.
2. If you do not see icons, press Menu.
3. Use navigational arrows to highlight [GRAPH] and press [EXE]
4. Type the function.
   
5. Use the [X.T,theta] key below [ALPHA] to type the X variable or the [ALPHA][+]. In general you should use the [X,T,theta] because is context sensitive: If you draw parametric or polar graphs, pressing that key gives you the right variable (T, or theta)
6. Use the caret [^] 3 to raise X to the third power and complete the function. and press [EXE]
7. At the bottom of the screen you see some tabs.
8. Press [F3:Type] and you will see all types of graphs you can draw. But since you want Y=, press [EXIT] to return to Y=editor
9. Press the Function key to above which you see [DRAW]
10. Adjust the Window dimensions if necessary

Finding the min and max

• While the graph is still displayed press [SHIFT][F5:G-Solve].You see all the possible calculationsF1:root, F2:Max,F3:Min,F4:YiCPT (y_intercept),F5:Isct (intersection) F6:=> to show the others, among which is the F3:integral.

• Press F3:min and hold your breath.

• After a while you get your minimun. Be patient, even if the small square at the top right disappears.

• Once you get the minimum, press [SHIFT][F5-G-Solve] and repeat for the maximum.
  

If you have to restrict your selection to one or the other the Casio wins "hands tied behind its back". If you need convincing read on.

Advantages of Casio
Newer technology
About half the price
About twice the Ram
Uses iconic menus
Most screens have tab/menus: No need to scroll.
Conic graphic embedded in OS, not need for an extra application
Dynamic graphing embedded in OS, no need for an extra application
Has a reset button
Several types of statistical graphs that do not exit on TI83 (pie chart)
Ability to select the integration algorithm
Better screen resolution.

Mathematical notation should be adhered to in order eliminate ambiguities and avoid wrong answers.

To find you 'result' I had to try different scenarii.
The one that worked is the following

1. e^(-0.019) is 0.9811793622
2. raise this result to the 12th power: the result is 0.7961242598
3. Multiply this last result by 250000 to find 199031.065

The last result suggests that you made a mistake copying the final result.
This is how you should have presented the question.

Calculate 250000*(e(-0.019))^12
Notice the two set of parentheses.
To type that on your calculator
250000[*] [ ( ] [ ( ] [ Shift ] [ e] [(-)] 0.019 [ )] [ ) ] [ ^] 12

In the foregoing key sequence,

1. every symbol between square brackets [ ] is a keypad key.
   
2. Numbers are not put in brackets.
   
3. [(-)] is the change sign symbol and
   
4. [^] is the general power key under [VARS] and above [LN]

At least it did not take me 400 years as in the case of Fermat's theorem.

You have two methods for drawing a circle on the FX-9750GPlus.

1. Use the Conics graphing: The general equation of a circle is aX^2 + aY^2 + bX+cY+d=0
2. Use the function graphing. But before you can do that you must transform the general equation (above) in such a way that you can write it as Y^2= X^2+EX+F. From this you can find the two branches Y1=SQRT(X^2+EX+F) and Y2=-SQRT(X^2+EX+F)

Your Solver is a numerical solver not a symbolic one. You have to supply an initial guess at a solution and the Solver finds it. If you suspect, or know, that there are others jut run the solver again supplying the initial guess for each additional solution.
One easy way to locate the roots of an equation is to draw the function (without =0) and see on the graph the approximate values of x where the function vanishes. These approximate values of the roots can be used as initial guesses in the Solver.

Hello,
To access the Random number generator, press [MENU], Use arrows to select [RUN] and press [EXE].
In [RUN] press [OPTN][F6:->] to pan to the right then press [F3:PROB] then [F4:RAND#]. The command echoes on the screen.

1. Now if you press [EXE] a number between 0 and 1 is generated.
2. Each time you press [EXE] a new number is generated.

Although it is not documented, I found out that if you enter RAND#(n) where n is an integer, it generates a number between (0 and n)

Hope it helps.