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July 31, 2014

July 31, 2014

Posted by **Elyse** on Monday, July 22, 2013 at 4:37pm.

9y'' + 9y' - 4y = 0

- Calculus-HELP PLZ !!!! -
**Steve**, Monday, July 22, 2013 at 4:56pm9a^2+9a-4=0

(3a-1)(3a+4) = 0

a = -4/3,1/3

y = c1 e^(-4/3 x) + c2 e^(1/3 x)

- Calculus-HELP PLZ !!!! -
**Elyse**, Monday, July 22, 2013 at 5:02pmThank you so much Steve! I had gotten this far but what about solving for the "complete" general solution? That's where I get lost....

- Calculus-HELP PLZ !!!! -
**Steve**, Monday, July 22, 2013 at 5:07pmyou got me.

We have found the general solution. Dunno what more you can come up with for a "complete" general solution.

Does your text explain the difference? Sounds bogus to me.

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