IIT JEE , AIEEE Forum - Mathematics , Algebra

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HERE IS ANOTHER SERIES...........( A TOUGH ONE )

IF

y = 3/4 + ( 3.5 )/ ( 16 . 2! ) + ( 3.5.7 )/ ( 64 .3! ) + ( 3.5.7.9 )/( 256 . 4! ).........

till infinty

THEN EVALUATE y .

hope u understood the pattern ............

A VERY SPL. REQUEST

THIS POST IS NOT FOR PEOPLE WHO HAVE SOLVED THIS Q. BEFORE OR HAVE AN IDEA FROM WHERE TO GET THE SOLUTION ( BY SOME UNKNOWN REFERENCES .............. )

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TAKE MY WORD , THIS ISNT EASY.

aforadi

is the general term
(2r+1) ! divided by (r!)^2 and 2^3r

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general term is

[ 3.5.7....( r times ) ] / [ (4^ r ) . r ! ]

aforadi

i know tht but its same as mine
u l see

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ok

u can say so.......

but what next.........

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14 hours and no replies...............

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shud i give a hint...............

Aatish

Oh pls plsplsplsplsplsplsplspslsplspls

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ok , to start with a very vague hint ,

u need to get a quadratic in y somehow..............

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ok , to start with a very vague hint ,

u need to get a quadratic in y somehow..............

raman_shadow

its really tuff!
blew out my mind

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R U ALL READY FOR ANOTHER HINT ...............

Aatish

pls .........

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