CONJUGATE POINTS OF SECOND-ORDER LINEAR DIFFERENTIAL EQUATIONS
AUTOR(ES)
Leighton, Walter
RESUMO
The paper of which the present article is itself an abstract is concerned with locating zeros of nonnull solutions of differential systems of the formcplx=fwhere r(x) and p(x) are continous and r(x) is positive for x ≥ a. When r(x) = 1 and p(x) = αx + β, necessary conditions and sufficient conditions are pro-vided that the interval (a,b] contain n zeros. The results are, of course, of importanceconsiderably beyond the case when p(x) is linear.
