1.

If a,b in R^(+) then find Lim_(nrarroo)sum_(k=1)^(n) ( n)/((k+an)(k+bn)) is equal to

Answer»

`(1)/(a-b) LN'(b(b+1))/(a(a+1))` if `a ne b`
`(1)/(a-b) ln'(a(b+1))/(b(a+1))` if `a ne b`
non EXISTENT if `a = b`
`(1)/(a(1+a))` if `a ne b`

Solution :N//A


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