Integrating with Constant Variables: TI-89 Symbolic Integration

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    Integration Ti-89
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Discussion Overview

The discussion revolves around the integration of expressions containing constant variables using the TI-89 calculator, particularly in the context of solving equations like m\frac{dv}{dt} = mg without knowing the values of the constants.

Discussion Character

  • Technical explanation

Main Points Raised

  • One participant inquires about integrating expressions with constant variables, specifically in the context of a physics equation.
  • Another participant suggests entering constants as letters and ensuring no values are stored to those letters.
  • A participant expresses difficulty with the integration process, noting that the output was not as expected.
  • Another reply advises on the correct input format, indicating that using "k*x" instead of "kx" is necessary for proper interpretation by the calculator.
  • A later reply acknowledges the advice received.

Areas of Agreement / Disagreement

Participants appear to agree on the method of inputting constants as letters, but there is a disagreement regarding the effectiveness of the integration process, as one participant reports an issue with the output.

Contextual Notes

There may be limitations related to the assumptions about variable definitions and the specific input format required for the TI-89, which are not fully resolved in the discussion.

cscott
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How can I integrate an expression with constant variables like needed when solving [itex]m\frac{dv}{dt} = mg[/itex] but assuming I don't know its value?
 
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Just type any constants in as letters. (Make sure you don't have any values stored to those letters first)
 
I don't think it's working... [itex]\int kx \cdot dx[/itex] gave [itex]kx \cdot x[/itex]
 
Make sure you type in k*x instead of just kx. It thinks that "kx" is one variable if you don't.
 
Ohh, thanks!
 

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