ChapterPderiv

Pderiv

Derivative of a polynomial.

Loading LOADSUB ALL FROM "PDERIV.HTS"

or LOADSUB FROM "MATHLIB.HTS"

or LOADSUB Pderiv FROM "MATHLIB.HTS"

Usage INTEGER N

REAL P(*),D(*)

CALL Pderiv(N,P(*),D(*))

Description

Pderiv calculates the polynomial that is the derivative of that described in P. It returns the coefficients of the derivative in D.

The first element in the arrays P and D represents the constant term in the polynomial. The second element in P and D represents the linear term; the third the quadratic term, etc. The interpretation of the elements in P and D is without regard to the OPTION BASE in effect or any lower bound specified when P and D were declared. N is the degree of the polynomial whose coefficients are in P.

Errors

Pderiv causes an HTBasic error if n > 10, if P contains fewer than n + 1 elements, or if D contains fewer than n elements.

See Also

Paderiv