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November 01, 2025, 03:34:50 pm
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Author Topic: CSE Paper  (Read 2923 times)  Share 

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ice_blockie

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CSE Paper
« on: September 30, 2008, 09:11:52 pm »
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This is like the fourth question of the CSE Trial Exam. Does anyone know how to go about antidifferentiating this: ? Any suggestions?
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ed_saifa

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Re: CSE Paper
« Reply #1 on: September 30, 2008, 09:14:29 pm »
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Split into partial fractions
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xox.happy1.xox

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Re: CSE Paper
« Reply #2 on: September 30, 2008, 09:18:47 pm »
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I tried to make the u substitution of cos(x), but that is obviously wrong. :(
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ice_blockie

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Re: CSE Paper
« Reply #3 on: September 30, 2008, 09:19:29 pm »
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Quote from: ed_saifa on September 30, 2008, 09:14:29 pm
Split into partial fractions

I tried using and splitting but I get nowhere. What do u specifically mean?  :-[
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ice_blockie

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Re: CSE Paper
« Reply #4 on: September 30, 2008, 09:20:14 pm »
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Quote from: xox.happy1.xox on September 30, 2008, 09:18:47 pm
I tried to make the u substitution of cos(x), but that is obviously wrong. :(

Don't worry, I stopped breathing for about 10 seconds...
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ed_saifa

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Re: CSE Paper
« Reply #5 on: September 30, 2008, 09:20:56 pm »
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"It's not a community effort"
"It's not allowed. Only death is a valid excuse"
"Probably for the first time time this year I was totally flabbergasted by some of the 'absolute junk' I had to correct .... I was going to use 'crap' but that was too kind a word"
"How can you expect to do well when
-you draw a lemon as having two half-cells connected with a salt bridge
-your lemons come with Cu2+ ions built in" - Dwyer
"Why'd you score so bad?!" - Zotos
"Your arguments are seri

ice_blockie

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Re: CSE Paper
« Reply #6 on: September 30, 2008, 09:23:26 pm »
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xox.happy1.xox

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Re: CSE Paper
« Reply #7 on: September 30, 2008, 09:25:13 pm »
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Then can we use the u=cos(x) substitution?  :P
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ice_blockie

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Re: CSE Paper
« Reply #8 on: September 30, 2008, 09:26:20 pm »
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Wait...sorry again how do you antidifferentiate the second fraction?
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ed_saifa

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Re: CSE Paper
« Reply #9 on: September 30, 2008, 09:28:27 pm »
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Quote from: ice_blockie on September 30, 2008, 09:26:20 pm
Wait...sorry again how do you antidifferentiate the second fraction?
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"It's not a community effort"
"It's not allowed. Only death is a valid excuse"
"Probably for the first time time this year I was totally flabbergasted by some of the 'absolute junk' I had to correct .... I was going to use 'crap' but that was too kind a word"
"How can you expect to do well when
-you draw a lemon as having two half-cells connected with a salt bridge
-your lemons come with Cu2+ ions built in" - Dwyer
"Why'd you score so bad?!" - Zotos
"Your arguments are seri

ice_blockie

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Re: CSE Paper
« Reply #10 on: September 30, 2008, 09:34:19 pm »
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crap again lol...
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Mao

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Re: CSE Paper
« Reply #11 on: September 30, 2008, 10:43:39 pm »
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Quote from: xox.happy1.xox on September 30, 2008, 09:25:13 pm
Then can we use the u=cos(x) substitution?  :P

or, recognise that =]
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Pandemonium

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Re: CSE Paper
« Reply #12 on: October 01, 2008, 06:50:19 pm »
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wait what... i don't recognise how you changed tanx to d/dx.
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Re: CSE Paper
« Reply #13 on: October 01, 2008, 06:56:50 pm »
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is the operator for differentiation. It differentiates whatever is after it.

i.e. Let

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Pandemonium

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Re: CSE Paper
« Reply #14 on: October 01, 2008, 07:05:01 pm »
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oh right. well like that's not 100% recognisable unless you remember that secxtanx is the derivative of secx.
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