Question about Casio FX83ES Scientific Calculator

Sorry, but you cannot.

You
can type in a formula that involves the memory variables X,Y, A, B,C,D,
E, =, . Such a formula is meant to be evaluated to get a solution (X
by default). Once you type the formula you press the Shifted function
SOLVE and you will be prompted for the constants, for Y etc. when you
press the EXE/= key you get the value of X.

If you turn off the calculator or change the calculation MODE, it is wiped out of memory.

To
make a long story short, you cannot STORE formulas in the calculator.
Better try to memorize them (commit then to YOUR OWN memory).

Posted on May 24, 2011

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Posted on Jan 02, 2017

- The Casio FX991ESPLUS is Casio's most advanced scientific calculator with 417 mathematical functions
- Recommended for Advanced GCSE, A/AS level and Highers
- This ever popular model is now available with Random Integers and an improved equation mode

Oct 27, 2014 | Casio Office Equipment & Supplies

In equation mode, you have system of linear equations (3 unknown) you have polynomial (quadratic and cubic), and solver. Use the solver foe any type of equation (nonlinear, polynomial of order higher than 4, trigonometric, exponential, logs).

May 21, 2012 | Casio Scientific Calculator Fx-570 Fx570...

Thhe Casio FX-9860G SD can solve a polynomial equation
of degree 2 or 3 with REAL coefficients. If the complex MODE is set to
REAL it will find the real roots. If the complex mode is set to** a+ib**, it will find the real and complex roots.

Apparently it will take coefficients that are real, and will give a Ma Error if any coefficient is complex.

Addendum.

The calculator CANNOT solve equations with complex coefficient. YOU can however convert the system of linear equations with ccomplex coefficients ( of the type you show) as a system of 4 linear equations in 4 unknowns; Split x into a real and an imaginary part, split y into a real and an imaginary part. Substitute Real(x)+iIm(x) for variable x in the equations; substitute Real(y)+iIm(y) for y in the two equations; do the algebra. In each of the original equations split the Real and imaginary parts. You should be able to derive 4 linear equations in unknowns Real(x), Im(x), Real(y), and Im(y).

Use the linear equation solver to obtain the solutions. Recompose x=Real(x)+iIm(x), and y=Real(y)+iIm(y)

Alternatively, after you create the system of 4 linear equations you can use the matrix utility to find Real(x), Im(x), Real(y) and Im(y) and recompose the x and y.

Apparently it will take coefficients that are real, and will give a Ma Error if any coefficient is complex.

Addendum.

The calculator CANNOT solve equations with complex coefficient. YOU can however convert the system of linear equations with ccomplex coefficients ( of the type you show) as a system of 4 linear equations in 4 unknowns; Split x into a real and an imaginary part, split y into a real and an imaginary part. Substitute Real(x)+iIm(x) for variable x in the equations; substitute Real(y)+iIm(y) for y in the two equations; do the algebra. In each of the original equations split the Real and imaginary parts. You should be able to derive 4 linear equations in unknowns Real(x), Im(x), Real(y), and Im(y).

Use the linear equation solver to obtain the solutions. Recompose x=Real(x)+iIm(x), and y=Real(y)+iIm(y)

Alternatively, after you create the system of 4 linear equations you can use the matrix utility to find Real(x), Im(x), Real(y) and Im(y) and recompose the x and y.

Mar 17, 2012 | Casio FX-9860G Graphic Calculator

The Casio FX-9860G SD can solve a polynomial equation
of degree 2 or 3 with REAL coefficients. If the complex MODE is set to
REAL it will find the real roots. If the complex mode is set to** a+ib**, it will find the real and complex roots.

Apparently it will take coefficients that are real, and will give a Ma Error if any coefficient is complex.

Addendum.

The calculator CANNOT solve equations with complex coefficient. YOU can however convert the system of linear equations with ccomplex coefficients ( of the type you show) as a system of 4 linear equations in 4 unknowns; Split x into a real and an imaginary part, split y into a real and an imaginary part. Substitute Real(x)+iIm(x) for variable x in the equations; substitute Real(y)+iIm(y) for y in the two equations; do the algebra. In each of the original equations split the Real and imaginary parts. You should be able to derive 4 linear equations in unknowns Real(x), Im(x), Real(y), and Im(y).

Use the linear equation solver to obtain the solutions. Recompose x=Real(x)+iIm(x), and y=Real(y)+iIm(y)

Apparently it will take coefficients that are real, and will give a Ma Error if any coefficient is complex.

Addendum.

The calculator CANNOT solve equations with complex coefficient. YOU can however convert the system of linear equations with ccomplex coefficients ( of the type you show) as a system of 4 linear equations in 4 unknowns; Split x into a real and an imaginary part, split y into a real and an imaginary part. Substitute Real(x)+iIm(x) for variable x in the equations; substitute Real(y)+iIm(y) for y in the two equations; do the algebra. In each of the original equations split the Real and imaginary parts. You should be able to derive 4 linear equations in unknowns Real(x), Im(x), Real(y), and Im(y).

Use the linear equation solver to obtain the solutions. Recompose x=Real(x)+iIm(x), and y=Real(y)+iIm(y)

Mar 17, 2012 | Casio Office Equipment & Supplies

Remove battery from calculator and put it again. Then type in HOME 2nd F1 and 2:NewProb and ENTER. Try to solve any equations now. It may be resolve problem!

Posted: Stevan Milanovic

Posted: Stevan Milanovic

Nov 25, 2011 | Texas Instruments TI-89 Calculator

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Mar 23, 2011 | Casio FX-270W Calculator

Hi,

I would certainly upgrade my choice to the FX-991ES. It can do (numerical) integrals, derivatives, it has 40 physical constants (instead of 8). It can do unit conversions, and the Natural display is a real pleasure.

Don't get me wrong, I am no TI calculator basher. I have just bought the TiNspire, AND TINspire CAS. I have a TI92, a TI83, Ti BA 35Solar.

If you do become an engineer, the calculators you might want to use (not during the exams) are the TI 89 Titanium, HP49G+/HP50G, the Casio ClassPad 330. You see I recommend the TI89 Titanium because there is a wealth of Engineering programs written for it.

Hope it makes your decision easier.

I would certainly upgrade my choice to the FX-991ES. It can do (numerical) integrals, derivatives, it has 40 physical constants (instead of 8). It can do unit conversions, and the Natural display is a real pleasure.

Don't get me wrong, I am no TI calculator basher. I have just bought the TiNspire, AND TINspire CAS. I have a TI92, a TI83, Ti BA 35Solar.

If you do become an engineer, the calculators you might want to use (not during the exams) are the TI 89 Titanium, HP49G+/HP50G, the Casio ClassPad 330. You see I recommend the TI89 Titanium because there is a wealth of Engineering programs written for it.

Hope it makes your decision easier.

Nov 08, 2009 | Texas Instruments TI-36X Scientific...

Hello,

Let us assume you have two simultaneous linear equations :

**a_1*x+ b_1*y+c_1=0**

a_2*x +b_2*y+c_2=0

where a_1, a_2, b_1, b_2, c_1,c_2 are coefficients (numerical or algebraic).

The problem is to obtain the particular values of the unknowns x and y for which the two equations are both satisfied: If you substitute the particular values of x and y you find in any of the two equations you discover that both equalities are true.

A small system of equations like the one above can be solved by some very simple algorithms (elimination, substitution, combination) which can be carried out by hand.

The solution of large systems of linear equations can be sought by making use of the concepts of matrices (plural of matrix), determinants, and certain rules called Cramer's rules.

Due to its repetitive nature, the algorithm ( a well defined, limited sequence of steps) is suitable for a calculating machine (computer or calculator).

Certain calculators have, embedded in their ROM, a program that solves linear systems of simultaneous equations. Usually you are asked to enter the values of the coefficients a_1, etc. in a set order, then you press ENTER or EXE (Casio) . If a solution exits (not all linear systems have solutions) the calculator displays it.

Hope that satisfies your curiosity.

Let us assume you have two simultaneous linear equations :

a_2*x +b_2*y+c_2=0

where a_1, a_2, b_1, b_2, c_1,c_2 are coefficients (numerical or algebraic).

The problem is to obtain the particular values of the unknowns x and y for which the two equations are both satisfied: If you substitute the particular values of x and y you find in any of the two equations you discover that both equalities are true.

A small system of equations like the one above can be solved by some very simple algorithms (elimination, substitution, combination) which can be carried out by hand.

The solution of large systems of linear equations can be sought by making use of the concepts of matrices (plural of matrix), determinants, and certain rules called Cramer's rules.

Due to its repetitive nature, the algorithm ( a well defined, limited sequence of steps) is suitable for a calculating machine (computer or calculator).

Certain calculators have, embedded in their ROM, a program that solves linear systems of simultaneous equations. Usually you are asked to enter the values of the coefficients a_1, etc. in a set order, then you press ENTER or EXE (Casio) . If a solution exits (not all linear systems have solutions) the calculator displays it.

Hope that satisfies your curiosity.

Aug 12, 2009 | Sharp EL-531VB Calculator

I do not think that you can DELETE it, you probably just cleared the equation, just put another equation into Y=, and it will work.

otherwise, if you don't have any programs you need or so... just press 2nd +

Scroll down to reset, and press clear RAM

otherwise, if you don't have any programs you need or so... just press 2nd +

Scroll down to reset, and press clear RAM

May 26, 2009 | Texas Instruments TI-84 Plus Silver...

Hello,

What do you want to do with it? If you want just to enter it, you do so on the command line.

Here are exemples of solutions

Under [Mode][F2] exact/aprox set to exact

solve(x^2+x-5=0,x) finds the exact solutions the top ones

Under [MODE][F2] Exact/Aprox set to Approximate you get approximate numerical solutions, the bottom ones.

There is another command nSolve( which solves numerically for an equation. You can specify a range of values where solution is suspected to be.

Hope it helps

What do you want to do with it? If you want just to enter it, you do so on the command line.

Here are exemples of solutions

Under [Mode][F2] exact/aprox set to exact

solve(x^2+x-5=0,x) finds the exact solutions the top ones

Under [MODE][F2] Exact/Aprox set to Approximate you get approximate numerical solutions, the bottom ones.

There is another command nSolve( which solves numerically for an equation. You can specify a range of values where solution is suspected to be.

Hope it helps

Dec 04, 2008 | Texas Instruments TI-89 Calculator

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