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lhs := rhs assigns rhs to be the delayed value of lhs. rhs is maintained in an unevaluated form. When lhs appears, it is replaced by rhs, evaluated afresh each time.

lhs := rhs returns Null if the assignment specified can be performed, and returns $Failed otherwise.
• You can see all the assignments associated with a symbol lhs by evaluating ?lhs or by clicking  on the
Calculation controller.
• See also: Clear, Set.


Using InstantCalculators

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

Plot f from 0 to 8Pi.

Plot f2 for x from Pi to 2Pi and y from Pi to 2Pi.

Entering Commands Directly

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

Define a custom function as  .

Values of the function at distinct points can be calculated.

A plot can be generated.

The function can be symbolically manipulated.

Multivariable functions can also be defined. This uses the ordinary mathematical notation for Exp.

Clear the function definitions.

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