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Texas Instruments Voyage 200 User Manual

Texas Instruments Voyage 200
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Symbolic Manipulation 233
Symbolic Manipulation
Symbolic ManipulationSymbolic Manipulation
Symbolic Manipulation
Using Undefined or Defined Variables
Using Undefined or Defined VariablesUsing Undefined or Defined Variables
Using Undefined or Defined Variables
When performing algebraic or calculus operations, it is important that you understand
the effect of using undefined and defined variables. Otherwise, you may get a number
for a result instead of the algebraic expression that you anticipated.
How Undefined and Defined Variables Are Treated
How Undefined and Defined Variables Are TreatedHow Undefined and Defined Variables Are Treated
How Undefined and Defined Variables Are Treated
When you enter an expression that contains a variable, the Voyage 200
Graphing Calculator treats the variable in one of two ways.
To see why this is important, suppose you want to find the first derivative of x
3
with
respect to x.
If the variable is undefined, it is treated as
an algebraic symbol.
If the variable is defined (even if defined
as 0), its value replaces the variable.
If x is undefined, the result is in the form
you probably expected.

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Texas Instruments Voyage 200 Specifications

General IconGeneral
TypeScientific
Form factorPocket
Product colorBlue
Display resolution128 x 240 pixels

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