 Laplace Transformation, im stuck!! |
 May 15, 2008 - 2:05 PM
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 Enthusiast  Joined Apr 2, '07 From Great Western Plateau Currently Offline Reputation: 9 (100%)  |
Its 3am in Oz and Im stuck with this gay question:
 I know that sin(t) = 1/(s^2 +1) and -t= -1/(s^2) ---> thus = -1/(s^2 +1)^2 but where the fin 2s coming from??  I need a rest. --------------------  98% completion --- aaRon |
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May 15, 2008 - 2:48 PM
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 Enthusiast Joined Nov 1, '07 From Santa Barbara, CA Currently Offline Reputation: 2 (100%) |
from what I remember you shouldn't have the variable 's' on top since its a sin function. The 's' comes in when you're using cos. Are you sure you came to that equation correctly? maybe your mistake is earlier. Gl and get some sleep
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May 15, 2008 - 8:16 PM
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Enthusiast Joined Apr 2, '07 From Great Western Plateau Currently Offline Reputation: 9 (100%) |
QUOTE (99Celica @ May 16, 2008 - 3:48 AM)  from what I remember you shouldn't have the variable 's' on top since its a sin function. The 's' comes in when you're using cos. Are you sure you came to that equation correctly? maybe your mistake is earlier. Gl and get some sleep Actually I need to prove how to get from that to -tsint. But its the Inverse Laplace Transform of Derivatives. -------------------- 98% completion --- aaRon |
Posts in this topic
lubu Laplace Transformation May 15, 2008 - 2:05 PM
GriffGirl ugh. May 15, 2008 - 2:59 PM hongkongnerdboy im asian
and i cant figure that out May 15, 2008 - 4:14 PM 96bluevert Man, I havn't done sin,cos, or tan since HS..s... May 15, 2008 - 4:37 PM jason did you figure it out yet?
if not i can break out... May 15, 2008 - 4:45 PM 99Celica QUOTE (96bluevert @ May 15, 2008 - 4... May 15, 2008 - 4:51 PM qatar11 Well... I think you take the Laplace of both sides... May 15, 2008 - 10:01 PM 99Celica Yea thats the method to use. nice work qatar
Ok m... May 15, 2008 - 10:15 PM
qatar11 QUOTE (99Celica @ May 15, 2008 - 11... May 15, 2008 - 11:31 PM qatar11 This is how far I got... I started off with the de... May 15, 2008 - 11:20 PM qatar11 I dunno... maybe the integration by parts needs to... May 15, 2008 - 11:27 PM lagos The answer is C. May 15, 2008 - 11:33 PM qatar11 @Lagos,
Where were you before I spent an hour on ... May 16, 2008 - 7:41 AM Consynx YOUR error is simple
if your demoninator is SUPPOS... May 16, 2008 - 10:09 AM Consynx just skimmed the 2nd search result till i saw Sin.... May 16, 2008 - 10:25 AM qatar11 Ya but the work, which is what he has to proved, i... May 16, 2008 - 10:41 AM lubu Ahhh I know what Im forgetting now...
Cheers fo... May 16, 2008 - 10:58 AM Consynx nvm, followed it.
you just did the top deriv 2nd, ... May 16, 2008 - 11:20 AM |
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