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Algebra please, How can I solve this? expand((x-5)^3). I´d like to use the "x" variable but a message " Non algebric-variable in expxpression" is appear. Thanks

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For expand, you don't need to put ",x" at the end.

just do: expand( (x-5)^3 )
and you should get: x^3-15x^2+75x-125

Posted on May 21, 2008

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Error: Non-algebraic variable in expression


Non-algebraic variable in expression: error 790
If a is the name of a PIC, GDB, MAC, FIG, etc., a+1 is invalid. Use a different variable name in the expression or delete the variable.

Apr 22, 2015 | Texas Instruments TI-89 Graphing Calc...

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What does polynomial function mean?


Let us backtrack so as to better jump.
An algebraic expression may contain one or several algebraic terms, separated by a plus sign or a or a minus and a sign.
Each algebraic term is the product of a constant coefficient and a power of some variable, or the powers of several variables.
Example of an algebraic term 3(x^2)(y^6)....
If the exponents of the various powers are positive integers, the term is called a monomial. In short no square roots, or fractionary powers of the variables appear in monomials. Thus 2/x, 3SQRT(x), or 1/x^5 are not monomials.
Finally, a polynomial is an algebraic expression made up of one or more monomials.
Example P(X)=(1/3)X^7-(SQRT(5)*X^4+ 16X-25 is a polynomial of degree 7 in the indeterminate/variable X
Q(X,Y)= 3(X^3)*Y^2 + 4X-5Y+10 is a polynomial of degree 5 in the variables X and Y.

Oct 01, 2014 | Calculators

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How would i solve for an expression and be able to leave it in terms of the variable, like (2a-1)(8a-5) and get the answer with the variable in it


This calculator cannot manipulate algebraic expressions. You can enter an expression and generate a table of values. You can enter an equation in one unknown and solve it. But you cannot do algebra.
You would need a calculator that has a Computer Algebra System (Algebra FX 2.0, or ClassPad 300/330). Sorry.

May 10, 2012 | Casio FX-115ES Scientific Calculator

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Error:non-algebraic variable in expression


Non-algebraic variable in expression error may occur if a is the name of a PIC, GDB, MAC, FIG, etc., a+1 is invalid. Use a different variable name in the expression or delete the variable

Mar 21, 2012 | Texas Instruments TI-89 Calculator

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How can i solve integrals with ALGEBRA FX 2.0 PLUS


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.

3_14_2012_11_39_12_pm.png

Mar 13, 2012 | Casio Algebra FX 2.0 Calculator

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When i try to differentiate an equation, the message: "error: non-algebraic variable in expression" what does this mean, and how do i fix it?


it sounds like your hitting the secondary key button and just putting in letters you should use x on variables button substitute other letters your using for x (sorry i couldn't make this much clearer)

Jan 17, 2011 | Texas Instruments TI-89 Calculator

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I just got the TI-Nspire. I'd like to solve a problem with undefined variables using Negative Exponent and things like the Expanded Power Rule. The Nspire will not let me store "x" as a variable. How...


You need the TINspire CAS (Computer Algebra System) to do symbolic manipulations. The Blue TINspire (with TI 84 keyboard) can only perform numerical computations.
If you use variables, the calculator will assign the numerical value stored in the variable.

Aug 17, 2010 | Texas Instruments TI-Nspire Graphic...

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TI 89 when solving equations or integrating a message appears:


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.

Apr 14, 2010 | Texas Instruments TI-89 Calculator

2 Answers

Solving multiple non-linear equations


Type it like this: solve( equation1 and equation2 and moreEquations, {list of variables to solve for})

Put all of your equations right after the opening parenthesis separated by the word and, then a comma, then within curly braces each variable you want to solve for each separated by a comma.

Apr 26, 2008 | Texas Instruments TI-89 Calculator

2 Answers

Doesnt solve integrates and derivatives


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

Sep 23, 2007 | Texas Instruments TI-89 Calculator

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