# ApCoCoA-1:DA.Class

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Revision as of 14:03, 22 April 2009 by S schuster (talk | contribs) (ApCoCoA:Diffalg.Class moved to ApCoCoA:DA.Class: To comply with style principles.)

## diffalg.Class

return the class of a given derivative

### Syntax

DA.Class(X:INDET):INT

### Description

The function Class returns the class of derivative X, i.e., the index of the differential indeterminate of which it is a derivative.

@param X Indeterminante for which the class is computed.

@return The class of indeterminate X.

#### Example

Use Q[x[1..2,0..20]]; $diffalg.Class(x[2,8]); ------------------------------- 2 -------------------------------