there are two questions in the attachment with the correct answers.
i have worked through the questions, to my knowledge, however seem to be only a few steps short of reaching the actual solution on each of the questions.
please help
For question 1a you have the complementary function and a particular solution. The general solution is the sum of these.
The condition that is always finite means that must be zero, and that then means that .
For 1b you have an on the right hand side that should not be there.
CB