- #1
radtad
- 19
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We have a set of problems for hw. I am stuck on 1 where I know the answer but can't seem to get it.
If dy/dt=ky and k is a nonzero constant then y could be
a. 2e^kty b. 2e^kt c. e^kt d. kty+5 e. 1/2ky^2 +1/2
I know the answer is b but i can't get that answer
Here is my work
S=integral sign
dy/dt=ky
dy/y=kdt
Sdy/y=kSdt
lny=kt
e^lny=e^kt
y=e^kt
How do u get a 2 in there for choice b
If dy/dt=ky and k is a nonzero constant then y could be
a. 2e^kty b. 2e^kt c. e^kt d. kty+5 e. 1/2ky^2 +1/2
I know the answer is b but i can't get that answer
Here is my work
S=integral sign
dy/dt=ky
dy/y=kdt
Sdy/y=kSdt
lny=kt
e^lny=e^kt
y=e^kt
How do u get a 2 in there for choice b
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