Question about Texas Instruments TI-89 Calculator

The function you give as example in the additional information to your duplicate post is too simple to generate an Argument error. Maybe a syntax error but not an argument error.

Check what you enter on the line that defines the function.**Do not confuse the minus sign - (for subtraction) and the change sign (negation sign) marked (-).**

You can also reset your calculator by pressing the button on the back.

Check what you enter on the line that defines the function.

You can also reset your calculator by pressing the button on the back.

Mar 09, 2014 | Calculators

This means that you're invoking some function with an argument out of the function's domain. For example, the arcsine function requires an argument between -1 and +1, inclusive. If you try to take the arcsine of 2, you'll get this error.

If you require further assistance, please reply to this post and specify exactly what you're trying to do when you get this error.

If you require further assistance, please reply to this post and specify exactly what you're trying to do when you get this error.

Mar 07, 2014 | Texas Instruments TI-83 Plus Calculator

The calculator does have several error message concerning the argument. For the Request( command the syntax is

Request(Message, VarName)

What you type is stored as a string. It is only after you try to convert it to a value that the calculator looks at its content.

Here is an example where the variable VarName is x

Request ("Variable x", x)

I enter a complex number, manipulate it mildly with no apparent problem. However when I try to convert it to a numerical expression, and store it in the variable x, y, theta, I get a message Error non-real result.

Request(Message, VarName)

What you type is stored as a string. It is only after you try to convert it to a value that the calculator looks at its content.

Here is an example where the variable VarName is x

Request ("Variable x", x)

I enter a complex number, manipulate it mildly with no apparent problem. However when I try to convert it to a numerical expression, and store it in the variable x, y, theta, I get a message Error non-real result.

Jan 13, 2014 | Texas Instruments Voyage 200 Calculator

You provided an invalid argument to a function, such as a negative number to square root or a number greater than one to arcsine.

If you need further details, please specify the model of your Casio calculator and the exact function and the argument you provided.

If you need further details, please specify the model of your Casio calculator and the exact function and the argument you provided.

Oct 20, 2013 | Casio Calculators

You tried to use an argument to a function that was not in the function's domain. For example, the arcsine function takes an argument from negative one to positive one. Trying to take the arcsine of 2 will generate a domain error.

If you need further assistance, please specify the exact function and argument that is generating this error.

If you need further assistance, please specify the exact function and argument that is generating this error.

Oct 15, 2013 | Texas Instruments TI-83 Plus Calculator

Take for example a function y=f(x). What is inside the function is called its argument (what it is acting on). If you get that error it may mean that the argument type is wrong or that it is out of range. Here are two simple examples.

- A function requires a real number and you make it act on a complex number (wrong argument type).
- You know that the log () function must have a positive argument and you try to calculate say log(-2.5).
- Arc sine and arc cosine must have an argument in the closed interval [-1,1] but you call them with a value outside that interval.
- A function is defined with a list of arguments yet it is called with more items in the list or less items in the list.

Apr 09, 2013 | Casio Fx-5800p Programmable Scientific...

Have
you checked the calculator's manual to see if the calculator is able
(natively) to handle functions of a complex argument. It is able to
handle simple algebra with complex numbers, powers, roots, solving a polynomial equation.

For this calculator, the hyperbolic functions must have a real argument otherwise you get a error. But just to make sure, try the exponential function with i (imaginary unit) as argument. If it comes back with a domain error you have your answer.

For this calculator, the hyperbolic functions must have a real argument otherwise you get a error. But just to make sure, try the exponential function with i (imaginary unit) as argument. If it comes back with a domain error you have your answer.

Apr 06, 2011 | Texas Instruments TI-89 Calculator

Error 07 is Syntax Error. From the manual: "You entered a value; look for misplaced functions, arguments, parentheses, or commas; check the syntax description in the A to Z reference."

If you can't find and fix the error, could you post the expression producing the error?

If you can't find and fix the error, could you post the expression producing the error?

Feb 16, 2011 | Texas Instruments TI-86 Calculator

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