Question about Casio CFX 9850GA Plus Calculator

Hello,

Here is the link to the user s manual.

http://support.casio.com/manualfile.php?rgn=4&cid=004002005

Hope it helps.

Posted on Sep 22, 2009

What does your graph look like? Do you have the proper angular mode set?

Jan 08, 2013 | Casio CFX 9850GB Plus Calculator

Press SHIFT [SETUP] to bring up the setup screen. Move down to the line beginning "Angle" and select "Rad."

Nov 29, 2010 | Casio CFX 9850GB Plus Calculator

If it is just a matter of the screen being too dim, you can actually increase the contrast.

- Turn calculator ON
- Press [MENU] even if you do not see anything
- Press [ALPHA][COS] sequence to access the letter E.
- Press repeatedly the Right Arrow till the contrast is adequate.

Jun 14, 2010 | Casio CFX-9850G Plus Calculator

- Turn calculator ON
- If you do not see icons press the [MENU] key.
- Use the arrow keys to move focus on the [RUN] icon.
- Press [EXE]
- In RUN screen press the [OPTN].
- After you press the down key once you highlight the line "Func Type"

The polar graph type is set by pressing F2:r=. In general r=f(theta). After the F2 key is pressed the Function type changes to r=

Now, if you press the MENU key and use arrows to focus on and select GRAPH, the function entry screen looks as in the picture below (without the 2cos(3theta))

After you enter the function (use the (X, theta, T) key below the [ALPHA] to enter the theta variable) press EXE to validate.

After drawing the r1=2cos(3theta) curve I opted to change the function to r1=2cos(5theta)

Press F6:Draw to draw the graph. Here is what you get.

Enjoy.

May 05, 2010 | Casio CFX 9850GB Plus Calculator

Press the RESET button on the back of the calculator. Use a starightened paper clip.

May 05, 2010 | Casio CFX 9850GB Plus Calculator

Hello,

Th CFX-9850GB Plus is programmed to perform 10 types of regressions, namely

LinearReg: Linear y=ax+b

Med-Med also linear y=ax+b

QuadReg :Quadratic y= ax^2+bx+c

Cubic: y=ax^3+bx^2+cx+d

Quartic: y=ax^4+bx^3+cx^2+dx+e

LogReg, logarithmic: y=a+b*ln(x)

ExpReg, exponential y=a*e^(bx)

PowerReg, power: y= ax^b

SinReg, sinusoidal: y=a*sin(bx+c) +d

LogisticReg, logistic; y= c/(1+a*e^(-bx))

There may be more regression models appropriate for more advanced (specialized) statistics but the ones in the list are all the CFX-9850GB plus offers. However, since the calculator knows a programming language, you may want to implement a particular model.

Hope that helps.

Th CFX-9850GB Plus is programmed to perform 10 types of regressions, namely

LinearReg: Linear y=ax+b

Med-Med also linear y=ax+b

QuadReg :Quadratic y= ax^2+bx+c

Cubic: y=ax^3+bx^2+cx+d

Quartic: y=ax^4+bx^3+cx^2+dx+e

LogReg, logarithmic: y=a+b*ln(x)

ExpReg, exponential y=a*e^(bx)

PowerReg, power: y= ax^b

SinReg, sinusoidal: y=a*sin(bx+c) +d

LogisticReg, logistic; y= c/(1+a*e^(-bx))

There may be more regression models appropriate for more advanced (specialized) statistics but the ones in the list are all the CFX-9850GB plus offers. However, since the calculator knows a programming language, you may want to implement a particular model.

Hope that helps.

Oct 24, 2009 | Casio CFX 9850GB Plus Calculator

Hello,

Turn calculator ON, press MENU if you see no icons. Use arrow key to highlight the RUN application. Press OPTN, press F6 to pan right. Press F3: Prob, then F4:Ran# then EXE to execute.

Each time you press EXE a new random number is generated. You might want to fix the number of decimal digits to less than the 10 digits displayed by default.

By default number generated are between 0 and 1. If you want numbers between 0 and 100 you enter Ran#(100).

Hope it helps.

Turn calculator ON, press MENU if you see no icons. Use arrow key to highlight the RUN application. Press OPTN, press F6 to pan right. Press F3: Prob, then F4:Ran# then EXE to execute.

Each time you press EXE a new random number is generated. You might want to fix the number of decimal digits to less than the 10 digits displayed by default.

By default number generated are between 0 and 1. If you want numbers between 0 and 100 you enter Ran#(100).

Hope it helps.

Oct 20, 2009 | Casio CFX 9850GB Plus Calculator

Hello,

You perform all calculations in complex mode. When you need to convert to angle amplitude, in the [RUN] screen press [OPTN][F3:CMPLX]

To obtain the angle press [Arg] ( complex number) [EXE]

To obtain the magnitude, amplitude press [Abs] (complex number) [EXE].

Since the [ANS] memory keeps only the last value calculated, you may have to store your result (the complex number) in a variable.

1+ 1 i [white right arrow under tan key to store] [ALPHA] H

Display shows 1+1i. Then

[Abs] [ALPHA] H [EXE] gives 1.414213562

[Arg] [ALPHA] H [EXE] gives 45

Hope it helps.

You perform all calculations in complex mode. When you need to convert to angle amplitude, in the [RUN] screen press [OPTN][F3:CMPLX]

To obtain the angle press [Arg] ( complex number) [EXE]

To obtain the magnitude, amplitude press [Abs] (complex number) [EXE].

Since the [ANS] memory keeps only the last value calculated, you may have to store your result (the complex number) in a variable.

1+ 1 i [white right arrow under tan key to store] [ALPHA] H

Display shows 1+1i. Then

[Abs] [ALPHA] H [EXE] gives 1.414213562

[Arg] [ALPHA] H [EXE] gives 45

Hope it helps.

May 22, 2009 | Casio CFX 9850GB Plus Calculator

Hello,

Here are the possible causes for such an error

1. calculation results exceeds calculation range.

2. Calculation is outside the input range of a function

3. Illogical operation (division by zero, etc.

4. Poor precision in**sigma calculation results**,

For all these reasons

Check the input numeric values and correct them . If you are using memory, check that the numeric values stored in memory are correct.

Hope it helps

Here are the possible causes for such an error

1. calculation results exceeds calculation range.

2. Calculation is outside the input range of a function

3. Illogical operation (division by zero, etc.

4. Poor precision in

For all these reasons

Check the input numeric values and correct them . If you are using memory, check that the numeric values stored in memory are correct.

Hope it helps

Apr 07, 2009 | Casio CFX-9850G Plus Calculator

In it's back, there is a small hole-reset key. prick it with your pencil.

Nov 11, 2007 | Casio CFX 9850GA Plus Calculator

Oct 11, 2011 | Casio CFX 9850GA Plus Calculator

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