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Built-in Mathematica Symbol

Constants

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

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

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:

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:

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:

Constants allows Dt to emulate D:

NonConstants allows D to emulate Dt: