plz solve my question
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Hey dea...!
Here’s ur answer..
=> (1/a1an) + 1/(a2an-1) + ...
= 1/[(a1+an)/2] * (1/2) * [(a1+an)/a1.an) + (a2 + an-1)/(a2.an-1) + ...]
= 2/(a1+an) * (1/2) (1/an + 1/a1 + 1/an-1 + 1/a2 + ... + 1/a1 + 1/an)]
= 2/(a1+an) * (1/a1 + 1/a2 + ... + 1/an)
Hope it helps u..!
With regards
@bipasha
Here’s ur answer..
=> (1/a1an) + 1/(a2an-1) + ...
= 1/[(a1+an)/2] * (1/2) * [(a1+an)/a1.an) + (a2 + an-1)/(a2.an-1) + ...]
= 2/(a1+an) * (1/2) (1/an + 1/a1 + 1/an-1 + 1/a2 + ... + 1/a1 + 1/an)]
= 2/(a1+an) * (1/a1 + 1/a2 + ... + 1/an)
Hope it helps u..!
With regards
@bipasha
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