Find first term and common difference of arithmetic sequence


1. Determine first term and common difference of arithmetic sequence explained. Provide the recrusive formula for sequence.

Find the first term of sequence .

Find  common difference.

Find recrusive formula for sequence.

Find the formula for nth term of sequence

2. Find whether infinite geometric series coverages or diverges. If it converges find sum.

1+ 1/3 + 1/9 +......

3. Complete sum of the sequence

nk=1(7/9)k

Sn = ( )[ 1- ( )n ].

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Mathematics: Find first term and common difference of arithmetic sequence
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