We have a set of problems for hw. I am stuck on 1 where I know the answer but cant seem to get it.(adsbygoogle = window.adsbygoogle || []).push({});

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 cant 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

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Calc problem

**Physics Forums | Science Articles, Homework Help, Discussion**