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OrthogonalSeries

  

Create

  

create a series

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

Create(expr, P1,..., Pn)

Create({expr, k=a..b}, P1)

Create(L, P1,..., Pn)

Create({L, expr}, P1,..., Pn)

Create({L, expr, k=a..b}, P1)

Parameters

expr

-

algebraic expression

P1, ..., Pn

-

orthogonal polynomials

k

-

name

a, b

-

integers (or infinity for b)

L

-

list of equalities

Description

• 

The Create(arguments) function creates an orthogonal series. The series is expanded in terms of the polynomials , which must have distinct indices and variables, and be in the OrthogonalSeries database.

• 

The Create(expr, P1,..., Pn) calling sequence creates an infinite series expanded in terms of  with the coefficient expr depending on the indices of the Pis. The indices of each Pi run from 0 to infinity. For univariate series, the range [a,b] can be specified by using the Create({expr, k=a..b}, P1) calling sequence where  is the index of .

• 

The Create(L, P1,..., Pn) calling sequence creates a finite series, namely, a polynomial expanded in the basis . The elements of L must have the form (k1,.., kn) = val. That is, the coefficient of index  of the created series is equal to val. In the case of a univariate series, the input  can be abbreviated as .

• 

Series with both a finite (particular) part and infinite (general) part can be created by using the Create({L, expr}, P1,..., Pn) calling sequence. For a range different from , use the Create({L, expr, k=a..b}, P1) calling sequence.

Examples

(1)

(2)

(3)

(4)

(5)

(6)

(7)

See Also

ChebyshevT

ChebyshevU

LaguerreL

OrthogonalSeries

 


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