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November 01, 2025, 03:09:27 pm
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Author Topic: AntiDifff  (Read 2173 times)  Share 

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jasopan

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AntiDifff
« on: May 16, 2010, 12:19:04 am »
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(dunno how to do that integral symbol  :D)
THanks!
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kakar0t

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Re: AntiDifff
« Reply #1 on: May 16, 2010, 12:34:40 am »
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is the answer (e^x + 4) - 4loge|e^x +4| ?
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TrueTears

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Re: AntiDifff
« Reply #2 on: May 16, 2010, 12:50:13 am »
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long divide it
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jasopan

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Re: AntiDifff
« Reply #3 on: May 16, 2010, 01:31:42 am »
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Aren't you left with another fraction after long division?
I got e^x - (4e^x) / (e^x +4)
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Mao

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Re: AntiDifff
« Reply #4 on: May 16, 2010, 02:03:27 am »
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Now use substitution on the second one. actually, just use substitution from step 1.

Let , also,

« Last Edit: May 16, 2010, 02:09:17 am by Mao »
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jasopan

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Re: AntiDifff
« Reply #5 on: May 16, 2010, 02:09:25 am »
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OH thanks Mao, I did some of those steps randomly but couldn't get em together, it's too late atm...
Cheers!

Is the 4 left off as it is the same as C? Or C includes 4? =$
« Last Edit: May 16, 2010, 05:47:35 pm by jasopan »
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olly_s15

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Re: AntiDifff
« Reply #6 on: May 16, 2010, 06:37:29 pm »
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Quote from: jasopan on May 16, 2010, 02:09:25 am
OH thanks Mao, I did some of those steps randomly but couldn't get em together, it's too late atm...
Cheers!

Is the 4 left off as it is the same as C? Or C includes 4? =$
the 4 is just a constant so yes it can be omitted
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kakar0t

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Re: AntiDifff
« Reply #7 on: May 16, 2010, 11:45:58 pm »
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woot i got it correct!
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Yitzi_K

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Re: AntiDifff
« Reply #8 on: May 22, 2010, 11:05:37 pm »
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Quote from: Mao on May 16, 2010, 02:03:27 am
,

is that actually legal? I thought you couldn't treat as a regular fraction.
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TrueTears

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Re: AntiDifff
« Reply #9 on: May 22, 2010, 11:07:18 pm »
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in vce it is, but rigoriously it's meant to be a differential, but who gives a shit about rigour in vce
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JJ3024

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Re: AntiDifff
« Reply #10 on: May 22, 2010, 11:14:31 pm »
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Quote from: TrueTears on May 22, 2010, 11:07:18 pm
in vce it is, but rigoriously it's meant to be a differential, but who gives a shit about rigour in vce
lool. a similar question was in my sac. Lucky i got it right^^~~~btw, hello simon~~
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TrueTears

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Re: AntiDifff
« Reply #11 on: May 22, 2010, 11:14:48 pm »
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hahaha hello JINGle bells :P
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darkphoenix

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Re: AntiDifff
« Reply #12 on: May 26, 2010, 11:10:00 pm »
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Quote from: Yitzi_K on May 22, 2010, 11:05:37 pm
Quote from: Mao on May 16, 2010, 02:03:27 am
,

is that actually legal? I thought you couldn't treat as a regular fraction.

It is, but i dont think it comes up very often.
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Martoman

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Re: AntiDifff
« Reply #13 on: May 26, 2010, 11:17:06 pm »
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Tis very legal. Its a small change in u as it changes in x. Its a number. Just an infinitely small one.
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Re: AntiDifff
« Reply #14 on: May 27, 2010, 02:27:55 pm »
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Quote from: Martoman on May 26, 2010, 11:17:06 pm
Tis very legal. Its a small change in u as it changes in x. Its a number. Just an infinitely small one.

Yes, I remember having a similar conversation about this in another thread.  *winks at Martoman then smiles*  ;)  :)
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