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\[y''4y=(x^23)sin(2x)\]
solve the diffyQ; oy what a nightmare ...
 2 years ago
 2 years ago
\[y''4y=(x^23)sin(2x)\] solve the diffyQ; oy what a nightmare ...
 2 years ago
 2 years ago

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LukecrayonzBest ResponseYou've already chosen the best response.3
I'd help you if I could, but when you solve this I posted one for you to help me with.
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
\[y=y_h+y_p\] \[y_h=c_1 e^{2x}+c_2 e^{2x}\] its that yp thats making me loose my religion :)
 2 years ago

Calculus102Best ResponseYou've already chosen the best response.0
Wooooooow. Just wondering, where did you get this problem from?
 2 years ago

LukecrayonzBest ResponseYou've already chosen the best response.3
Where the hell did c come into play?
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
i call it #14 form section 4.3 ... from HELL!!! lol
 2 years ago

HermeezeyBest ResponseYou've already chosen the best response.0
@Calculus102 It's differential equations. It's like a class after Calc III
 2 years ago

Calculus102Best ResponseYou've already chosen the best response.0
Calc 3??? Like multivariate calculus?
 2 years ago

LukecrayonzBest ResponseYou've already chosen the best response.3
I'm done here, I am zero help.
 2 years ago

LukecrayonzBest ResponseYou've already chosen the best response.3
I'm in PRE calculus. This is madness.
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
\[y_p=(ax^2+bx+c)sin(2x)+(fx^2+gx+h)cos(2x)\]
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
calciii is cake compared to having to deal with this tripe ....
 2 years ago

bahrom7893Best ResponseYou've already chosen the best response.1
Bernoulli's method, anyone?
 2 years ago

kryptonBest ResponseYou've already chosen the best response.0
this is very simple ,chain rule,product rule and some pellet mixed together
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
burnoodle aint gonna help on this one
 2 years ago

bahrom7893Best ResponseYou've already chosen the best response.1
wait nevermind... bernoulli was if u had y^n lol not nth derivative.. i suck at math
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
its keeping track of the mindnumbingness till the end ... i dont think i have a happy personality left in me after this lol
 2 years ago

bahrom7893Best ResponseYou've already chosen the best response.1
I took diff eq's.. use the char equation? r^24r = 0 r(r4)=0 r = 0, r = 4
 2 years ago

bahrom7893Best ResponseYou've already chosen the best response.1
but what about the right? i forgot.. and i only took this like a year ago.
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
yeah the homogenous parts a breeze done did that
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
the right is one of those "make a good guess" type deals
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
heres my guess \[y_p=(ax^2+bx+c)sin(2x)+(fx^2+gx+h)cos(2x)\]
 2 years ago

bahrom7893Best ResponseYou've already chosen the best response.1
ohh one of the rules? anyway i gotta eat dinner, mom's yelling at me lol.
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
\[y_p=(ax^2+bx+c)sin(2x)+(fx^2+gx+h)cos(2x)\] \[y' _p=(2ax+b)sin(2x)+(2ax^2+2bx+2c)cos(2x)\]\[\hspace{5em} +(2fx+g)cos(2x)+(2fx^22gx2h)sin(2x)\] \[y'' _p=(2a)sin(2x)+(4ax+2b)cos(2x)\]\[\hspace{3em}+(4ax+2b)cos(2x)+(4ax^24bx4c)sin(2x)\]\[\hspace{6em} +(2f)cos(2x)+(4fx2g)sin(2x)\]\[\hspace{9em}+(4fx2g)sin(2x)+(4fx^24gx4h)cos(2x)\]
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
\[(4ax^24bx4c)sin(2x)\]\[(2a4ax^24bx4c4fx2g4fx2g)sin(2x)\] \[(4fx^24gx4h)cos(2x)\]\[(4ax+2b+4qx+2b+2f4fx^24gx4h)cos(2x)\] \[(8ax^28bx8c+2a8fx4)sin(2x)=(x^23)sin(2x)\]\[a=\frac{1}{8}\] \[(8bx8c\frac{1}{4}8fx4)=(3)\] ugh ... messed it up again \[(8fx^28gx8h+4b+8ax+4b+2f)cos(2x)=0cos(2x)\]
 2 years ago

kryptonBest ResponseYou've already chosen the best response.0
LOL...THIS CAN BE pelletY
 2 years ago

bahrom7893Best ResponseYou've already chosen the best response.1
satellite, where does your math knowledge come from?
 2 years ago

bahrom7893Best ResponseYou've already chosen the best response.1
Wait LOOOLL, u're amistre!!! Doesn't matter man, where does your knowledge come from amistre?
 2 years ago

bahrom7893Best ResponseYou've already chosen the best response.1
You guys are epic! Like seriously! I'm very impressed, look up to you guys :))!
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
\[(8ax^28bx8c+2a8fx4g)=(x^23)\] \[(8a)x^2+(8b8f)x+(2a8c4g)=x^2+0x3\] i gots no math knowledge ;)
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
well, I know a = 1/8 regardless of what that other stuff does :)
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
i spose we gotta undo the cosines now and have some systems of equations to play with for the remaing terms
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
(8f) x^2+(8g+8a)x+(8h+8b+2f)=0x^2+0x+0 f = 0 so b = 0
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
which means h=0 too for that constant
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
(8(0)) x^2+(8g+8a)x+(8(0)+8(0)+2(0))=0x^2+0x+0 8g+8a = 0; and a = 1/8 8g1 = 0 ; g = 1/8
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
2(1/8)8c4(1/8)=3 1/4 8c +1/2=3 8c =3' 1/4 c =13/32
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
\[y''4y=(x^23)sin(2x)\] \[y=c_1e^{2x}+c_2e^{2x}(\frac{1}{8}x^2\frac{13}{32})sin(2x)\frac{1}{8}xcos(2x)\]
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
and i believe the wolf agrees .... yay!!
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
if JamesJ had been here he could of answered it with one hand tied behind his back ;)
 2 years ago

gopederBest ResponseYou've already chosen the best response.0
Amistre64? is that you?
 2 years ago

gopederBest ResponseYou've already chosen the best response.0
remember me its gopeder :)
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
thats what it says on my nametag :)
 2 years ago

gopederBest ResponseYou've already chosen the best response.0
Do you Remember me im the bear guy :)
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
i vaguely recall a screenname like yours; at my age its all i can do to remember to wear socks
 2 years ago

gopederBest ResponseYou've already chosen the best response.0
xD we talked alot maybe 4 mounts ago
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
yeah, 4 months is an eternity around here lol how you been?
 2 years ago

gopederBest ResponseYou've already chosen the best response.0
haha so true :) Not much Just starting Geometry.. its loads of fun
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
if you ever meet euclid, punch him in the breadbasket for me. hes to blame for alot of that geometry stuff
 2 years ago

gopederBest ResponseYou've already chosen the best response.0
But at the end of the day its really cool because it relates to real world
 2 years ago

bahrom7893Best ResponseYou've already chosen the best response.1
Amistre, sorry to bother you guys, but can you take a look at this? please? http://openstudy.com/study#/updates/4f4d9f77e4b019d0ebade348
 2 years ago

robtobeyBest ResponseYou've already chosen the best response.0
Refer to the attachment.
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
We got "derive" at the college that looks quite similar to that kind of thing.
 2 years ago
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