polyder

Polynomial differentiation.

Syntax

• k = polyder(p)
• k = polyder(a, b)
• [q, d] = polyder(a, b)

Input argument

• p - vector: polynomial coefficients
• a - row vector: polynomial coefficients
• b - row vector: polynomial coefficients

Output argument

• k - row vector: differentiated polynomial coefficients
• q - row vector: numerator polynomial
• d - row vector: denominator polynomial

Description

k = polyder(p) return the coefficients of the derivative of the polynomial whose coefficients are given by the vector p.

k = polyder(a, b) returns the derivative of the product of the polynomials a and b.

[q, d] = polyder(a, b) returns the derivative of the quotient of the polynomials a and b.

Example

p = [30 0 -20 0 10 50];
q = polyder(p)

See also

polyval, poly.

History

Author

Allan CORNET