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Abstract
We discuss differentiation of solutions to the boundary value problem
y ( n )
=
f ( x , y , y ′ , y ′ ′ , … , y ( n − 1 ) ) , a
<
x
<
b ,
y ( i ) ( x
j )
= y i j , 0
≤
i
≤ m j , 1
≤
j
≤
k
− 1 ,
y ( i ) ( x
k )
+ ∫
c d p y ( x ) d x
= y i k , 0
≤
i
≤ m k , ∑
i = 1 k m i
=
n ,
with respect to the boundary data. We show that under certain conditions, partial derivatives of the
solution
y ( x ) of the boundary
value problem with respect to the various boundary data exist and solve the associated variational
equation along y ( x ) .
Keywords
variational equation, integral condition, continuous
dependence, smoothness, Peano theorem
Mathematical Subject Classification
Primary: 34B10
Secondary: 34B15
Milestones
Received: 20 August 2020
Revised: 14 September 2020
Accepted: 28 September 2020
Published: 4 March 2021
Communicated by Johnny Henderson