... ProblemsVolume 2009, Article ID 362983, 16 pagesdoi:10.1155/2009/362983 Research Article Existence and Uniqueness of Solutions for Higher-Order Three-PointBoundary Value ProblemsMinghe Pei1 and Sung ... xn−2c,xn−1c,3.37has at least one solution x1t in Ω.Step 4. Show that x1t is a solution of BVP 1.1, 1.2.In fact, the solution x1t of BVP 3.36, 3.37 will be a solution of BVP 1.1, 1.2,ifitsatisfiesϕit≤ ... Scientific,Teaneck, NJ, USA, 1986.3 R. P. Agarwal and F H. Wong, “Existence of positive solutions for non -positive higher-order BVPs,”Journal of Computational and Applied Mathematics, vol. 88, no. 1,...