If for an A,P., S_{8}=16 and S_{16}=8, find the first negative ter | Filo
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Class 11

Math

Algebra

Sequences and Series

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If for an ., and , find the first negative term.

Solution:
Formula,


Given,


......(1)


......(2)

solving (1) and (2), we get,







10th term is the first negative number.



Hence verified.
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