Please send the solution to the problem given in the attachment.

go through this link it will help you how to find roots

https://youtu.be/hN6OB6HG7XQ

If you find any calculation mistake , Please let me know. But concept is this.

Any doubt then you can ask

PFA.

ye wrong hai. you must write (D^2+i a^2)(D^2-i a^2)y =0 see this https://youtu.be/8QjBcy6CH1I visit this link https://www.quora.com/Can-you-find-the-solution-of-D-4-4-y-0-h...