Set

• lhs = rhs evaluates rhs and assigns the result to be the value of lhs. From then on, lhs is replaced by rhs whenever it appears.
• {, , ... } = {, , ... } evaluates the and assigns the results to be the values of the corresponding .

• New assignments with identical lhs overwrite old ones.
• You can see all the assignments associated with a symbol lhs by evaluating ?lhs or by clicking on the Calculation controller.
• lhs = rhs returns rhs even if for some reason the assignment specified cannot be performed.
• See also: Clear, SetDelayed.

Examples

Using InstantCalculators

Here are the InstantCalculators for the Set function. Enter the parameters for your calculation and click Define to see the result.

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Entering Commands Directly

You can paste a template for this command via the Text Input button on the Set Function Controller.

Set the variable a to 3.

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The variable can be used in calculations.

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This is understood as a new variable. It is not interpreted as multiplication of a and b.

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To multiply a and b, insert a space.

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Variable names can be strings of characters such as expr. Their values can be math expressions or numerical values.

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Clear the variable definitions.

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