Which of the following differential equations are in self-adjoint form? Select all that apply.
A) $r ^ { \prime } ( x ) y ^ { \prime \prime } + r ( x ) y ^ { \prime } + \lambda y = 0$
B) $y ^ { \prime \prime } + y ^ { \prime } + \lambda y = 0$
C) $( 1 - x ) y ^ { \prime \prime } - 2 x y ^ { \prime } + \lambda y = 0$
D) $x ^ { 2 } y ^ { \prime \prime } + x y ^ { \prime } + \left( x ^ { 2 } - n ^ { 2 } \right) y = 0$
E) $y ^ { \prime \prime } + \lambda y = 0$

Question

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The Answer of Which of the following differential equations are in self-adjoint form? Select all that apply.
A) $r ^ { \prime } ( x ) y ^ { \prime \prime } + r ( x ) y ^ { \prime } + \lambda y = 0$
B) $y ^ { \prime \prime } + y ^ { \prime } + \lambda y = 0$
C) $( 1 - x ) y ^ { \prime \prime } - 2 x y ^ { \prime } + \lambda y = 0$
D) $x ^ { 2 } y ^ { \prime \prime } + x y ^ { \prime } + \left( x ^ { 2 } - n ^ { 2 } \right) y = 0$
E) $y ^ { \prime \prime } + \lambda y = 0$

Which of the Following Differential Equations Are in Self-Adjoint Form r′(x)y′′+r(x)y′+λy=0r ^ { \prime } ( x ) y ^ { \prime \prime } + r ( x ) y ^ { \prime } + \lambda y = 0r′(x)y′′+r(x)y′+λy=0

Which of the Following Differential Equations Are in Self-Adjoint Form $r ^ { \prime } ( x ) y ^ { \prime \prime } + r ( x ) y ^ { \prime } + \lambda y = 0$