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√2+1,1,√2-1 what is n term? how to solve this problem

lalit pathak , 7 Years ago
Grade 11
anser 1 Answers
Arun

Last Activity: 7 Years ago

if we solve 1/(\sqrt2 + 1)
we get (\sqrt2 – 1)/2 – 1
 = \sqrt2 –1
 
and now if we solve (\sqrt2 – 1)/1 = \sqrt2 –1
hence we get same common ratio.
thus these terms are in G.P.
first term = a = \sqrt2 +1
now nth term = an = a* rn-1
an = (\sqrt2 +1) . (\sqrt2 – 1)n –1
hope it helps

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