bella6027 bella6027
  • 17-10-2022
  • Mathematics
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9
wer:
The first term of an arithmetic sequence is a, and the common difference is d.
Write a formula for the sum of the first n terms, a₁ + a₂ + + an
should only include variables a,, d, and n.
a₁ + a₂ +...+ a₁ =
an
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