Whenever i try to solve an integrate or a derivative a message appears that says "non-algebraic variable in expression" i do exactly what the guidebook says...i even did the examples it had in it but that message appears in that situation too... what should i do???

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If you are using X as your variable try this. Hit the F4 key, press 4 and type X. This will delete the variable x from memory and you should be good to go.

Posted on Oct 04, 2007

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Try clearing the memory of all the variables..that might solve the problem mohit

Posted on Oct 01, 2007

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Posted on Jan 02, 2017

To calculate the arc length of a curve **you need the derivatives as functions of a variable **not the derivatives at one point. If I were you I would read the manual for more complete information. Maybe if you wrote a program that does that.

Mar 24, 2014 | Casio FX-9750GPlus Calculator

The syntax for the evaluation of definite integrals (integrals with boundary limits) is as shown on the screen capture below.

$ (function , variable , lower bound, upper bound)

By default the name of the dummy variable is x. If you use another name, the variable must appear as an argument of the function, and as variable.

$ (function , variable , lower bound, upper bound)

By default the name of the dummy variable is x. If you use another name, the variable must appear as an argument of the function, and as variable.

Mar 13, 2012 | Casio Algebra FX 2.0 Calculator

Sorry to disappoint you but the Casio FX-9750Gplus does not handle symbolic calculations. It does not have a Computer Algebra System or CAS. It can however calculate the numerical integration of a function between two limits, as well as the first and second derivatives of a function at a given point.

- To access the numerical integration and differentiation,
- Press the Menu button.
- Highlight the RUN icon and press [ENTER/EXE]
- Press [OPTN][F4:CALC]. Then

- Press [F2:d/dx] for first derivative

- Press [F3:d^2/dx^2 for second derivative,

- or [F4:integral]

Nov 01, 2010 | Casio FX-9750GPlus Calculator

The newer version of the OS 2.0.0.1188 is quite different from the initial version. It would be a good idea to upgrade the OS.

Back to your question. Since I upgraded my calculator, I am unable to illustrate the calculations with screen captures that are meaningful to you. If you do not mind I will show you how to calculate derivatives and integrals using OS Version 2.0.0.1188

In Calculator Mode

For the numerical integration

Select Calculus (see above)>Numerical Integration>ENTER.

Type in your integral using the template. Here is the procedure illustrated.

Back to your question. Since I upgraded my calculator, I am unable to illustrate the calculations with screen captures that are meaningful to you. If you do not mind I will show you how to calculate derivatives and integrals using OS Version 2.0.0.1188

In Calculator Mode

- Press the Menu button.
- Use down arrow to highlight 4:Calculus or just press 4
- Select 1:Numerical derivative at a point and press ENTER
- An entry screen opens where you can select the name of the independent variable (default is x, not X), the point where you want the derivative and whether you calculate the first or the second derivative.
- After you make your choices, you press ENTER and a template is displayed in calculator screen.
- All you have to do then is to specify the function you are differentiating.

For the numerical integration

Select Calculus (see above)>Numerical Integration>ENTER.

Type in your integral using the template. Here is the procedure illustrated.

May 28, 2010 | Texas Instruments TI-Nspire Graphic...

With the ALPHA keyboard, Type in the NewProb command and press ]ENTER] It resets the one-letter variables to their default status.

Alternatively, you can use the CATALOG of commands to launch the NewProb command.

Another way is

In HOME directory, press the [2nd][F1] to activate the F6 key. In the menu list, press 1:Clear a-z and ]ENTER].

If you have to use the variable x multiplied by a function (sin, cos, tan, log, etc) do not used implied multiplication: enter the [*] explicitly.

Alternatively, you can use the CATALOG of commands to launch the NewProb command.

Another way is

In HOME directory, press the [2nd][F1] to activate the F6 key. In the menu list, press 1:Clear a-z and ]ENTER].

If you have to use the variable x multiplied by a function (sin, cos, tan, log, etc) do not used implied multiplication: enter the [*] explicitly.

Apr 14, 2010 | Texas Instruments TI-89 Calculator

Sorry, but you cannot calculate limits of functions with this calculator. It does not have a Computer `Algebra System (CAS). For that you need a graphing calculator with CAS: Casio ClassPad 300, 300PLUS, 330, HP 48 GII, HP49 G/ G+, HP 50G, TI-NSPIRE CAS, TI89 Titanium, TI 92/92PLUS, TI Voyage 200 PLT. It is still a very good scientific (non graphing) calculator

However, you can calculate numerical derivatives, and numerical integrals, solve linear and non-linear equations.

Even though this post does meet your expectations, do not let that prevent you from rating it.

However, you can calculate numerical derivatives, and numerical integrals, solve linear and non-linear equations.

Even though this post does meet your expectations, do not let that prevent you from rating it.

Jan 21, 2010 | Casio FX-115ES Scientific Calculator

If you want to get an answer like 1/2X for d/dx(X^2), you will have to
purchase a CAS calculator like Casio's Algebra FX-2 or Classpad. TI series calculators also have CAS.

However, you can calculate the numerical values of derivatives and integrals only.

To calculate the value of a proper integral:

**∫**xdx from 0 to 2, input as follows:

**∫**dx(X,0,2)

To calculate derivative at a point:

SHIFT+**∫**dx key X^2,3)

Display looks like this: d/dx(X^2,3).

However, you can calculate the numerical values of derivatives and integrals only.

To calculate the value of a proper integral:

- Press the 'ON' key;
- Press the Integral key ;
- Enter your expression (example X^2+X-3 etc);
- Press the 'comma' key after your expression;
- Input the first limit after comma, input comma again after first limit;
- Close brackets;
- Press the equals key, display may return after a while with the answer.

To calculate derivative at a point:

- Press Shift and then the integration key.
- Enter your function;
- Input comma;
- input the point at which you want to evaluate the derivative;
- Close bracket and press enter.

SHIFT+

Display looks like this: d/dx(X^2,3).

Oct 23, 2009 | Casio FX-300MS Calculator

Hello,

This means that you are using a non-algebraic variable in an expression. I know, I am not even paraphrasing. Exemple: if you write 2 + johnQ, where johnQ is a table of data, a picture or a GDB, graphical data base object.

Here is an exemple where mat is a 2X2 matrix and mot is a table.

Hope it helps.

This means that you are using a non-algebraic variable in an expression. I know, I am not even paraphrasing. Exemple: if you write 2 + johnQ, where johnQ is a table of data, a picture or a GDB, graphical data base object.

Here is an exemple where mat is a 2X2 matrix and mot is a table.

Hope it helps.

Sep 14, 2009 | Texas Instruments TI-89 Calculator

Hello,

I assume that by anti-derivative you mean the integral. I believe that you can only calculate definite integrals with this calculator. A definite integral requires that you specify the function e.g ln(x), the variable, x, the numerical value of the lower limit, 0.5 and the numerical value of the upper limit , say 2.

Try this:**INT(sin(x),x, 0, pi/2)**

This calculator can only give numerical values of definite integrals. If you want to perform symbolic calculations, you shoul look towards some other, more sophisticated Casios Casio ClassPad 330, or the TI Voyage200PLT, or the TI89Titanium. etc.

Hope it helps

I assume that by anti-derivative you mean the integral. I believe that you can only calculate definite integrals with this calculator. A definite integral requires that you specify the function e.g ln(x), the variable, x, the numerical value of the lower limit, 0.5 and the numerical value of the upper limit , say 2.

Try this:

This calculator can only give numerical values of definite integrals. If you want to perform symbolic calculations, you shoul look towards some other, more sophisticated Casios Casio ClassPad 330, or the TI Voyage200PLT, or the TI89Titanium. etc.

Hope it helps

Aug 28, 2009 | Casio FX-115ES Scientific Calculator

On the home screen, go to F6 ([2nd] [F1]) and then press [2] (NewProb). It should fix the problem.

Feb 15, 2007 | Texas Instruments TI-89 Calculator

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