9000063809
Level:
B
Given the sequence \(\left ( \frac{1}
{n(n+1)}\right )_{n=1}^{\infty }\),
find the recurrence relation for this sequence.
\(a_{n+1} = \frac{n}
{n+2}a_{n},\ a_{1} = \frac{1}
{2}\)
\(a_{n+1} = \frac{n}
{n+1}a_{n},\ a_{1} = \frac{1}
{2}\)
\(a_{n+1} = \frac{n+1}
{n} a_{n},\ a_{1} = \frac{1}
{2}\)
\(a_{n+1} = \frac{n+1}
{n+2}a_{n},\ a_{1} = \frac{1}
{2}\)