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Title: Reduction of Order for second order differential equations
Description: Reduction of order requires that a solution already be known. Without this known solution we won’t be able to do reduction of order. Therefore, this file shows you the two cases of reduction methods ( homogeneous and non-homogeneous ODE) supported by three solved examples in details.

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4
...

𝑦 β€²β€² + 𝑃( π‘₯ ) 𝑦 β€² + 𝑄 ( π‘₯ ) 𝑦 = 𝑔(π‘₯)
The procedure:
1- If it is homogenous: 𝑦 β€²β€² + 𝑃( π‘₯ ) 𝑦 β€² + 𝑄 ( π‘₯ ) 𝑦 = 0
Use the formula directly: 𝑦2 = 𝑦1 ∫

𝑒 βˆ’ ∫ 𝑝(π‘₯)𝑑π‘₯
𝑦12

𝑑π‘₯

2- if it is non-homogenous: 𝑦 β€²β€² + 𝑃( π‘₯ ) 𝑦 β€² + 𝑄 ( π‘₯ ) 𝑦 =
𝑔(π‘₯)
Use the following:
1- 𝑦2 = 𝑦1 Γ— 𝑒
β€²
2- π‘‘β„Žπ‘’ 𝐷
...
E you
get linear first order in w and x
4- Now solve by 2
Title: Reduction of Order for second order differential equations
Description: Reduction of order requires that a solution already be known. Without this known solution we won’t be able to do reduction of order. Therefore, this file shows you the two cases of reduction methods ( homogeneous and non-homogeneous ODE) supported by three solved examples in details.