The second term should be De^( - √(5)t), I made a mistake when writing out the question.
The Attempt at a Solution
I worked it out to be
A = 0, B = -1/5, C = 3/10, D = -3/10
answer is 3.09
Is that correct? I have been through my calculations and can find no fault, I just want to make sure I have a good grasp on these questions, thank you.