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![[Post New]](/templates/default/images/icon_minipost_new.gif) 7 May 2007 13:44:32 IST
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If a and b are first terms and c the last term of an AP . a+b+c= ??
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In the process of learnin..............blunders do happen !!! |
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7 May 2007 19:47:13 IST
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HEY...........................................................................
 a and b are first terms ???????????????
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7 May 2007 19:51:10 IST
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he means a&b r first 2 terms..
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vision for iit never ends........ |
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Hello! since u haven't specified...the strength of the last term...thus answer will have a variable....
u said...a,b......c...where c=last term or L....
now d=b-a
therefore.....c= a+(n-1)(b-a)
..=> a-c = (n-1)(a-b)
=> a-c = an - bn - a - b....
=> a-2c = (a-b)n -(a+b+c)
=> 2c-a + (a-b)n...is the answer........
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Don't Dream ..Do the dream...
Rock On ....
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9 May 2007 23:10:58 IST
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yes it is a variable........ But the answer shud be only in terms of a,b and c ... The answer right above is almost correct..........
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In the process of learnin..............blunders do happen !!! |
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