POSITIVE SOLUTIONS FOR A CLASS OF SINGULAR TWO POINT BOUNDARY VALUE PROBLEMS

Volume 2, Issue 2, pp 126-135 Publication Date: May 15, 2009

Authors

RAHMAT ALI KHAN - Centre for Advanced Mathematics and Physics, National University of Sciences and Technology, Campus of College of Electrical and Mechanical Engineering, Peshawar Road, Rawalpindi, Pakistan
NASEER AHMAD ASIF - Centre for Advanced Mathematics and Physics, National University of Sciences and Technology, Campus of College of Electrical and Mechanical Engineering, Peshawar Road, Rawalpindi, Pakistan

Abstract

Existence of positive solution for a class of singular boundary value problems of the type $−x''(t) = f(t, x(t), x'(t)),\quad t \in (0, 1)$ $x(0) = 0, x(1) = 0,$ is established. The nonlinearity $f \in C((0, 1) \times (0,\infty) \times (−\infty,\infty), (−\infty,\infty))$ is allowed to change sign and is singular at $t = 0, t = 1$ and/or $x = 0$. An example is included to show the applicability of our result.

Keywords

• Positive solutions
• Singular differential equations
• Dirichlet boundary conditions.

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