|GNU Octave Manual Version 3|
by John W. Eaton, David Bateman, Søren Hauberg
Paperback (6"x9"), 568 pages
RRP £24.95 ($39.95)
26.4 Derivatives and Integrals
Octave comes with functions for computing the derivative and the integral
of a polynomial. The functions
both return new polynomials describing the result. As an example we'll
compute the definite integral of p(x) = x^2 + 1 from 0 to 3.
c = [1, 0, 1]; integral = polyint(c); area = polyval(integral, 3) - polyval(integral, 0) => 12
- Function File: polyderiv (c)
- Function File: [q] = polyderiv (b, a)
- Function File: [q, r] = polyderiv (b, a)
- Return the coefficients of the derivative of the polynomial whose
coefficients are given by vector c. If a pair of polynomials
is given b and a, the derivative of the product is
returned in q, or the quotient numerator in q and the
quotient denominator in r.
See also poly, polyinteg, polyreduce, roots, conv, deconv, residue, filter, polygcd, polyval, polyvalm
- Function File: polyder (c)
- Function File: [q] = polyder (b, a)
- Function File: [q, r] = polyder (b, a)
- See polyderiv.
- Function File: polyint (c, k)
- Return the coefficients of the integral of the polynomial whose
coefficients are represented by the vector c. The variable
k is the constant of integration, which by default is set to zero.
See also poly, polyderiv, polyreduce, roots, conv, deconv, residue, filter, polyval, and polyvalm
|ISBN 095461206X||GNU Octave Manual Version 3||See the print edition|