Question about Casio CFX-9850G Plus Calculator

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Problem with casio calculator, model 9850g plus

Hi!! My casio calculator, model 9850g plus, have a problem.. It have just two options for equation calculations, the first one linear equation with two to six unknows, and the second quadratic and cubic equation, and i want to know where is my solve calculations option??? and how i can to get it again??

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The Solve( command can be accessed in RUN mode by pressing the OPTN button.
In the screen that is then displayed are TABS (at the bottom).
Press [F4:CALC] then [F1:Solve]
The command echoes on the screen, ready to be completed and executed.

Posted on Jul 25, 2010


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Convert a polar equation to a rectangular equation?

To convert a complex number (not an equation) from rectangular coordinates to polar coordinates you do as follows
2+3[OPTN][ F3 (CLPX)][F1(i)][F6 >][F3> r ,theta][EXE]


Nov 08, 2014 | Casio CFX-9850G Plus Calculator

1 Answer

How can i use for newton raphson method?

The newton method is used by this calculator to find the roots of equations. If you want to implement YOUR version of the Newton/Raphson algorithm, you may have to write the program yourself.

Jun 03, 2010 | Casio CFX-9850G Plus Calculator

1 Answer

The F buttons on my Casio 9850 aren't working!

You can use the hardware resetting procedure. There is a button on the back of calculator that you can press using a straightened paper clip.

May 18, 2010 | Casio CFX-9850G Plus Calculator

1 Answer

In complex number mode, how to get out?

"Is there anything that I can do about this to stop my answers being complex numbers when solving cubic equations?"
You are making an assumption that is unwarranted.Namely that a cubic equation must necessarily have 3 real roots. This is not the case.

Let your equation be
If coefficients are complex you should expect some complex roots. Right?
If the coefficients are REAL then depending on the discriminant
you can have three cases
DELTA positive : three distinct real roots
DELTA=0 , the equation has a multiple root and all roots are REAL
DELTA negative: the equation has ONE real root and 2 complex roots that are complex conjugate of each other.

It suffices to look at the Tartaglia/Cardano expressions of the roots to know that more often than not there is going to be complex roots.


May 05, 2010 | Casio CFX-9850G Plus Calculator

1 Answer

I need a manual for a Casio calculator

May 03, 2010 | Casio CFX-9850G Plus Calculator

1 Answer

WhAT IS AN Ma error

It is an abbreviation for mathematical (calculation ) error:
You did not actually ask about how to cure the problem, but here it is.

1.Calculation exceeds calculation range.
2.Calculation outside the input range of a function
3. Illogical operation (division by 0)
4. Poor precision is Sigma calculations (stats)
For all the above check input values.

5. Poor precision in differential calculation results (derivatives:decrease the delta, the step)
6. Poor precision in integral calculation results ( integrals: Change the tolerance tol)
7.Cannot find results in equation calculations (Check coefficients of equations

Take your pick of the above:Only you know what you were doing before the error condition arose.
Hope it helps satisfy your curiosity.

Oct 19, 2009 | Casio CFX-9850G Plus Calculator

1 Answer

How do I find the correlation coefficient on my calculator?

You will find it on the same screen where you find the regression equation, the regression coefficients etc. However it is not defined for certain types of regressions.
Hope it helps.

Sep 26, 2009 | Casio CFX-9850G Plus Calculator

2 Answers

Where to get free owners manual for casio cfx-9850g

Here is the link to all chapters in the book. You may want to use a pdf creator to lump them all in the same book.

Hope it helps.

May 27, 2009 | Casio CFX-9850G Plus Calculator

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