csat-suneung 2005 Q4

csat-suneung · South-Korea · csat__math-humanities 3 marks Sequences and series, recurrence and convergence Multiple-choice on sequence properties
What is the value of $\lim _ { n \rightarrow \infty } \left( \sqrt { n ^ { 2 } + 6 n + 4 } - n \right)$? [3 points]
(1) $\frac { 1 } { 3 }$
(2) $\frac { 1 } { 2 }$
(3) 1
(4) 2
(5) 3
What is the value of $\lim _ { n \rightarrow \infty } \left( \sqrt { n ^ { 2 } + 6 n + 4 } - n \right)$? [3 points]\\
(1) $\frac { 1 } { 3 }$\\
(2) $\frac { 1 } { 2 }$\\
(3) 1\\
(4) 2\\
(5) 3