successió

Si 0 [< |a_{n+1}+(-1)·a_{n}|_{+} < ( 1/2^{n} ) ==> a_{n} es convergent

a_{oo} = a_{1}+1 = a_{0}+2

Si 0 >] |a_{n+1}+(-1)·a_{n}|_{-} > (-1)·( 1/2^{n} ) ==> a_{n} es convergent

a_{oo} = a_{1}+(-1) = a_{0}+(-2)