D-Operators, Particular Integrals

[Prathibha Rajapaksha]

Hello Everyone,

I found a resource book for Differential Equations to study D-Operators.

Here I can not understand how they jump from b (as highlighted) to c (as highlighted). I am ok with part A.

Thank you.

 

[lex]

 

[Prathibha Rajapaksha]

View attachment 31112

Hello,

Really thank you for the reply and sorry for the late reply. It is clear. I could not find a proof for this anywhere but here. The last past also is ok, in this way,

 

[lex]

I don't quite follow your working, but I'm glad you are ok with what I showed.

 

[Prathibha Rajapaksha]

I don't quite follow your working, but I'm glad you are ok with what I showed.

so Is there another way to prove It? Can you show me

 

[lex]