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Type::PolyOf

Type representing polynomials

MuPAD® notebooks are not recommended. Use MATLAB® live scripts instead.

MATLAB live scripts support most MuPAD functionality, though there are some differences. For more information, see Convert MuPAD Notebooks to MATLAB Live Scripts.

Syntax

testtype(obj, Type::PolyOf(coeff_type, <num_ind>))

Description

With Type::PolyOf, polynomials can be identified.

The call testtype(obj, Type::PolyOf(coeff_type)) checks, whether obj is a polynomial with coefficients of type coeff_type and, if so, returns TRUE, otherwise FALSE.

    Note:   Only polynomials of type DOM_POLY can be identified with Type::PolyOf, see Type::PolyExpr for polynomial expressions.

coeff_type determines the type of the coefficients.

The optional argument num_ind determines the number of indeterminates. If this argument is not given, the polynomial may have any number of indeterminates.

This type does not represent a property.

Examples

Example 1

Is the object a polynomial with integer coefficients?

P := poly(-x^2 - x + 3):
testtype(P, Type::PolyOf(Type::Integer))

Is the object a polynomial with integer coefficients and two indets?

P := poly(-x^2 - x + 3, [x, y]):
testtype(P, Type::PolyOf(Type::Integer, 2))

delete P:

Parameters

obj

Any MuPAD® object

coeff_type

The type of the coefficientes; a type can be an object of the library Type or one of the possible return values of domtype and type

num_ind

The number of indeterminates

Return Values

See testtype

See Also

MuPAD Functions

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