next up previous contents index
suivant: Sturm sequences : sturmseq monter: Arithmetic and polynomials précédent: Sturm sequences and number   Table des matières   Index


Number of zeros in [a, b[ : sturmab

sturmab takes four arguments: a polynomial expression P, a variable name and two real or complex numbers a and b Input :
sturmab(x^2*(x^3+2),x,-2,0)
Output :
1
Input :
sturmab(x^3-1,x,-2-i,5+3i
Output :
3
Input :
sturmab(x^3-1,x,-i,5+3i
Output :
1
Warning !!!!
P is defined by its symbolic expression.
Input :
sturmab([1,0,0,2,0,0],x,-2,0),
Output :
Bad argument type.



giac documentation written by Renée De Graeve and Bernard Parisse