# Difference between revisions of "ApCoCoA-1:DA.DiffOrd"

From ApCoCoAWiki

(Corrected example.) |
|||

Line 12: | Line 12: | ||

</itemize> | </itemize> | ||

<example> | <example> | ||

− | Use | + | Use QQ[x[1..2,0..20]]; |

F:=x[1,4]^2-x[2,4]^3; | F:=x[1,4]^2-x[2,4]^3; | ||

DA.DiffOrd(F); | DA.DiffOrd(F); |

## Revision as of 10:55, 28 April 2009

## DA.DiffOrd

Compute the differential order of a differential polynomial.

### Syntax

DA.DiffOrd(F:POLY):INT

### Description

Computes the differential order of the differential polynomial F. The differential order is the maximum order of the derivatives occuring in the terms of F.

@param

*F*A differential polynomial.@return Order of F.

#### Example

Use QQ[x[1..2,0..20]]; F:=x[1,4]^2-x[2,4]^3; DA.DiffOrd(F); ------------------------------- 4 -------------------------------