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Mathematics 22 Online
OpenStudy (anonymous):

obtain the general solution of auxiliary equation y'' - 8y' + 17y =0 y(0)=4 y'(0)=-1

OpenStudy (perl):

didnt i answer this? where is my work

OpenStudy (abb0t):

Lol

OpenStudy (abb0t):

You can solve this using basic algebra techniques.

OpenStudy (perl):

hmmm, its a homogenous differential equation

OpenStudy (perl):

the characteristic equation gave us two roots, 4+i, 4 - i

OpenStudy (perl):

pangji, please post my work i did earlier. i am discouraged by this

OpenStudy (abb0t):

the general solution. this is a relatively easy problem to explain. you should just explain it again for him/ her :)

OpenStudy (perl):

the general solution was y = e^(4x) ( c1 * cos x + c2 * sin x )

OpenStudy (abb0t):

yep. and now what's next :)

OpenStudy (perl):

plug in zero, take the derivative, etc

OpenStudy (abb0t):

Don't tell me, tell the asker :)

OpenStudy (perl):

oh they left

OpenStudy (perl):

maybe she dont like me

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