We consider the following differential equation
View the MathML sourceu(n)(t)=F(t,u(t)),t∈[0,1],
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together with the three-point focal type boundary conditions
View the MathML sourceu(j)(0)=0,0≤j≤n−3,
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View the MathML sourceu(n−2)(p)=0,u(n−1)(1)=0,
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where View the MathML source12