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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Alka gupta
this is a cauchy sequence then by " cauchy's convergence criterion" this sequence must be convergent. It is converges to (S1+2S2)/3 so correct ans A
can you do the math?
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mam can we solve like this
anku you put Sn , Sn-1 , Sn-2 =l but we can't do this because we don't know sequence is convergent ....first we have to prove it is convergent by help of cauchy's definition ...then we can put L ...so here the only method to prove this sequence is convergent which I uploaded above
ok mam got it now