Q. 125.0( 2 Votes )

Write th

Answer :


a1 = -1
an =
For n = 2, a2 =
For n = 3, a3 = = -
For n = 4, a4 = = -
For n = 5, a5 = = -
Hence first 5 terms are
-1, -
and the series is
(-1) +
= -1 -

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