THE ZEROS OF SOLUTIONS OF SOME DIFFERENTIAL INEQUALITIES

  • 투고 : 2003.06.12
  • 발행 : 2003.10.30

초록

Let $x(t)$ satisty $$(p(t)x^{\prime}(t))^{\prime}+q(t)x^{{\alpha}}(t)+r(t)x^{{\beta}-1}x^{\prime}(t){\leq}0({\geq}0)$$. Then the zeros of $x(t)$ or $x^{\prime}(t)$ are simple.

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