# ApCoCoA-1:DA.PseudoReduce

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This article is about a function from ApCoCoA-1. |

## DA.PseudoReduce

Computes a pseudo normal form of a differential polynomial.

### Syntax

DA.PseudoReduce(F:POLY, G:LIST):POLY

### Description

DA.PseudoReduce computes the pseudo normal form of the differential polynomial `F` wrt. the list `G` of differential polynomials.

@param

*F*Differential polynomial for which to compute the pseudo normal.@param

*G*List of differential polynomials wrt. which the normal form of`F`has to be computed.@return The pseudo normal form of

`F`wrt.`G`.

#### Example

Use QQ[x[1..1,0..20]]; Use QQ[x[1..1,0..20]], Ord(DA.DiffTO("Lex")); DA.PseudoReduce(x[1,1]^4+x[1,0], [x[1,0]^2+3x[1,0]]); ------------------------------- -3x[1,0] -------------------------------