create a formal power series from a polynomial - Maple Help

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powseries[powpoly] - create a formal power series from a polynomial

Calling Sequence

powpoly(poly, var)

Parameters

poly

-

polynomial in var

var

-

variable

Description

• 

The function powpoly(poly, var) returns a formal power series equivalent to poly.

• 

Thus, for all i, the ith coefficient of the power series returned is coeff(poly, var, i).

• 

The command with(powseries,powpoly) allows the use of the abbreviated form of this command.

Examples

withpowseries:

t:=powpoly2x5+4x4x+5,x:

tpsformt,s,5

5s+4s4+Os5

(1)

tpsformt,s,4

5s+Os4

(2)

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