Answer:
cos3x
Step-by-step explanation:
y" - y' + 9y = 3 sin 3x


here
will be replaced by
where
is coefficient of x




y=cos3x
hence Particular solution is cos3x
Answer:
-5.65
Step-by-step explanation:
-4 1/4 - 1 2/5 = -5.65
Answer: download photo math
Step-by-step explanation: