JEE Math Practice Question
If $$\mathop {\lim }\limits_{n \to \infty } \left( {\sqrt {{n^2} - n - 1} + n\alpha + \beta } \right) = 0$$, then $$8(\alpha+\beta)$$ is equal to :
- A.4
- B.$$-$$8
- C.$$-$$4
- D.8
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