Real Sequence/Examples/(-1)^n 2^(-n)

From ProofWiki
Jump to navigation Jump to search

Examples of Real Sequence

The real sequence whose first few terms are:

$1, -\dfrac 1 2, \dfrac 1 4, -\dfrac 1 8, \dotsc$

can be defined by the formula:

$S = \sequence {\paren {-1}^n \dfrac 1 {2^n} }_{n \mathop \ge 0}$


Sources