Complete Question
The complete question is shown on the first uploaded image
Answer:
a
No singular point due to the exponent in the solution
The interval is 
b
NONE
Step-by-step explanation:
From the question we are told that

The generally solution is mathematically represented as

=> 
integrating both sides

=> 
=> 
=> 
Here 
=> 
From the above equation we see that the domain for x has no singular point the interval is

Also there is no transient term in the general solution obtained because as
there no case where 
Answer:

Step-by-step explanation:
finally

The part the it is multiplying by the placholder (not adding)
example
2+4x
4 is placeholder, 2 is not
x and y are placeholders
5/3 is not
5/3 is the coefient