BUILT-IN WOLFRAM LANGUAGE SYMBOL
is an attribute that indicates zero derivative of a symbol with respect to all parameters.
- Constant is used by Dt.
- Functions f[…] are taken to have zero total derivative if f has attribute Constant.
- Mathematical constants such as Pi have attribute Constant.
π is a mathematical constant representing a number:
π is not explicitly a number:
π is numeric and evaluates to a number with N:
Define f to be a constant function for total derivatives computed with Dt: