The differential equation u(m)(r) +p(t)u(g(t)) = 0, where p is one-signed, is broken into four cases, according to the parity of m and the sign of p. In each case, an analysis is given of the effect g can have on oscillation properties, and oscillation and nonoscillation criteria are given.ui2n)(t) -q(t)u(t) = 0, and
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