Math, asked by KanhaiyakImat, 8 months ago

If a1, a2, a3, ...,an be an AP of nonzero terms then prove that.
1/a1*a2+1/a2*a3+1/a3*a4+...+1/an-1*an = n-1/a1*an

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Answered by rajrsharma2007
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