1.

In a problem of differentiation of(f(x))/(g(x)), one student writes the derivative of(f(x))/(g(x)) as(f'(x))/(g'(x))and he finds the correct result . If g(x)=x^(2)and lim_(xtooo)f(x)=4On the basis of above information , answer the following questions :sum_(r=1)^(n+2)(r^(2))/(f(r)) is

Answer»

`(N(n+1)(2n+1))/(6)`
`(n(n+1)(2n+1))/(24)`
`(1)/(4)+(n(n+1)(2n+1))/(24)`
`1+(n(n+1)(2n+1))/(24)`

ANSWER :C


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