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![[Post New]](/templates/default/images/icon_minipost_new.gif) 15 May 2007 11:21:14 IST
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Find the coefficient of xn in the expansion of
log e ( a + bx + cx2 ) where a,b,c,n  R.
Please give a detailed answer or the actual final answer .Don't just give half solution and leave rest of the solution for me as I am weak in solving a 'series' problem using simple methods.I often tend to think complicated methods.
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Ken
From: UNITED STATES, Green Bay, Wisconsin
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15 May 2007 12:38:13 IST
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Hey buddy I am unable to see
where a,b,c,n ???? R.
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There's Light at the end of every Tunnel, so KEEP MOVING....
Best of luck to all my mates....
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15 May 2007 12:42:19 IST
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Is it b/n
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There's Light at the end of every Tunnel, so KEEP MOVING....
Best of luck to all my mates....
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15 May 2007 12:50:10 IST
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KnOcK kNoCk!!!!!!!!!!!
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There's Light at the end of every Tunnel, so KEEP MOVING....
Best of luck to all my mates....
............................................................................................................................................................................................
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15 May 2007 13:34:37 IST
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OFFTOPIC:
i request everyone to avoid using extermely large signatures as they look ugly and at the time costs a lot of bandwidth to dialup users (plz dont use any image larger than 10KB in sigs)
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15 May 2007 20:00:11 IST
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Hey Aatish! It is not b/n. The answer will involve n or n+1 or n-1 or something like that as power.Please try again..................
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Ken
From: UNITED STATES, Green Bay, Wisconsin
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16 May 2007 21:48:43 IST
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Hey is anyone there.Common guys please try to solve it .It may be an
IIT JEE 2008 question.
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Ken
From: UNITED STATES, Green Bay, Wisconsin
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6 Jun 2007 09:35:57 IST
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Are you all goiitians serious about the fact that no one of you can solve this ?Then why you all have registered in this site ?
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Ken
From: UNITED STATES, Green Bay, Wisconsin
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9 Jun 2007 09:07:04 IST
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No one there !
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Ken
From: UNITED STATES, Green Bay, Wisconsin
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12 Jun 2007 21:56:17 IST
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Yaar, i think dere mst hve bn a prntng mstk.
A relatn b/n a,b,c hs 2 b dere.
In analogy 2 ur prob., i cn shw u smthng 2 mke u clr.
Lts c---------------tek ds as an example in acc. 2 ur problm.
 ,  be the roots f eqn.ax2 + bx +c=0
ln[a(1+ b/a x +c/a x2)], let d whole expn. Insde bracket b 'E.'
lnE = lna + ln(1+ x ) +ln(1+ x )
= lna + ( + )x +1/2(2 + 2 )x2 +.....inf.
So, u cn c coeff. F xn vl b 1/n (-1)n(n + n )
Now +=b/a & =c/a
The n's dt u fnd here r in powrs excpt 1/n. All numrcls r in pwrs.
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12 Jun 2007 22:02:16 IST
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But Hey ..lnE = lna + ln(1+ ?x ) +ln(1+ ?x )
= lna + (? + ? )x ?1/2(?2 + ?2 )x2 +??.inf.
hows that ..ln(c+k)=lnc x ln k but the problem is not incorrect Priya.
In fact no relation between a,b,c is required.
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Ken
From: UNITED STATES, Green Bay, Wisconsin
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12 Jun 2007 22:26:25 IST
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Look if no relation s dere dn deres no soln.
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12 Jun 2007 22:36:08 IST
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dere hs 2 b a reln...else hw cn u cme 2 a cnclusn.
Do it urslf ul gt 2 kno...
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12 Jun 2007 22:37:35 IST
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I tld u its jst an exmple in acc. 2 ur problm.
Hpe u gt it nw................
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12 Jun 2007 22:54:14 IST
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