- #1
lude1
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Homework Statement
If dy/dt = ky and k is a nonzero constant, than y could be
a. 2e^kty
b. 2e^kt
c. e^kt + 3
d. kty + 5
e. .5ky^2 + .5
Correct answer is b. 2e^kt
Homework Equations
The Attempt at a Solution
I don't really know what I should be doing. I have a feeling I have to work backwards, therefore do the integral of ky? But if that is the case, I have no idea how e^kt is created through that integral. 2e^kt reminded me of Ce^kt, but that doesn't have anything to do with this problem either.