If a1, a2,...... ,an >0, then prove tha...

If `a_1, a_2,...... ,a_n >0,` then prove that `(a_1)/(a_2)+(a_2)/(a_3)+(a_3)/(a_4)+.....+(a_(n-1))/(a_n)+(a_n)/(a_1)> n`

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