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shuning

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回复: Re: 回复: Re: 回复: Re: 回复: Re: 回复: Re: 回复: Re: prove it

shame 'bout that >.< but at least you got to see a BIGGER dot with lil dots around it haha =P
i'm amazed no one has answered your question yet considering how much this conversation is bumping the thread to the top.
oh well at least 4 ppl said their are working on it.... xD

all that to just see some bigger dots T.T not worth it LOL... i could of stayed home and had some nice sleep no stinky socks and no 12 @ night out in the cold... and I can still looked @ the stars LOL
 
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ianc

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if
show that
hence show that

n = 1,2,3 ........
Hi there

I don't know if there is a proper "4 unit" method to do these, but this is sort of how i remember doing them in yr 12

First, calculate the integral using partial fractions.
choose:


You should get:


Using this (replace n with n-1):


Okay, lets fiddle with our result for so we can substitute in






i dont know about the last bit of the question sorry

if you look at what they want, we need to get rid of the from the formula we derived for




So

sorry i can't think of what to do after this, but hopefully this is enough to put you on the right track!

hope this helps :)

edit: beaten! but my choice of u and v made the integration a bit easier :)
 
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jet

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samthebear

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oh well at least 4 ppl said their are working on it.... xD

all that to just see some bigger dots T.T not worth it LOL... i could of stayed home and had some nice sleep no sleepy socks and no 12 @ night... and still looked @ the stars LOL
lol suddenly the whole thread got flooded with solutions haha - shame our conversation has now been derailed XD hope whatever solutions been posted helps =P
 

jet

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just curious -- as an hsc student, how did you do this step? have you memorised some formula that does it for you?
Well, the definition of the notation:

so you can just work with that. btw, I did 4u last year so im prob not the best person to ask.
 

dog on heat

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bump
 

shuning

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lol suddenly the whole thread got flooded with solutions haha - shame our conversation has now been derailed XD hope whatever solutions been posted helps =P
yea... i had anna on msn commenting to me about the camp LOL....

btw JetBlack.... ur PRO LOL

thx so much ^^
 

jet

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yea... i had anna on msn commenting to me about the camp LOL....

btw JetBlack.... ur PRO LOL

thx so much ^^
No problems and Thanks!:D
 

ianc

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Re: 回复: Re: 回复: Re: 回复: Re: 回复: Re: 回复: Re: prove it

Well, the definition of the notation:

so you can just work with that. btw, I did 4u last year so im prob not the best person to ask.
haha whoops i thought the question was asking to us for where was just a constant.... not

so if you did 4u maths last year, this year must be a bit boring for you then?
 

jet

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Re: 回复: Re: 回复: Re: 回复: Re: 回复: Re: 回复: Re: prove it

haha whoops i thought the question was asking to us for where was just a constant.... not

so if you did 4u maths last year, this year must be a bit boring for you then?
Not really, I'm doing the Cosmology Distinction course, which is really cool. Plus I have Music and English extension to keep me busy.
 

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