Is it right????

BITSAT 2015 Tutorials › Algebra questions › Is it right????

If S=.99999999.......âˆž

then 10S=9.9999999.....âˆž

then 9S=9
then S=1
?????

#Mathematics #Algebra

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7 Answers

1

narayan ·2011-07-04 23:06:45

yes..it is right

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1

Debosmit Majumder ·2011-07-05 05:36:11

yes it is right....it`s a way to prove that 0.999999....recurring is equal to 1

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7

Sigma ·2011-07-05 07:49:41

But can we assume a no. like this to be as S(a real definite no.)?
We can say that it tends to 1 but how can it be Equal to 1??//

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11

sagnik sarkar ·2011-07-05 08:36:55

0.99999.... is approximately and not exactly 1.

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1

aditya ravichandran ·2011-07-05 08:46:52

Also
S=10.00000000000.....1
10S=100.0000000000.....1
9S=90
S=10

SO ,
9.999999999...=10=10.00000...1 ???

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1

Ricky ·2011-07-05 08:51:06

@ Kreyszig , that is why " f ( x ) = x " is continuos at " x = 10 " .

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Debosmit Majumder ·2011-07-05 08:54:41

exactly....that is the reason i think

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