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Constants

See Also
- D
Tech Notes
- Total Derivatives
- See Also
  - D
- Tech Notes
  - Total Derivatives

Constants

is an option for Dt which gives a list of objects to be taken as constants.

Details

If f appears in the list of Constants, then both Dt[f] and Dt[f[…]] are taken to be zero.

Examples

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Basic Examples (3)

Here both a and b are assumed to depend on x:

Specify that a does not depend on x using the Constants option:

Specify that both a and b are independent of x:

Scope (3)

Use TagSet to prescribe a constant:

Use SetAttributes to prescribe a constant:

For a constant f any expression f[expr] is also assumed to be constant:

Properties & Relations (2)

Constants allows Dt to emulate D:

NonConstants allows D to emulate Dt:

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