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What is the explicit formula for this sequence? −8, −3, 2, 7, …
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What is the explicit formula for this sequence? −8, −3, 2, 7, …

User Siegi
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1 Answer

4 votes

It's an arithmetical sequence with
a_1=-8,d=5

So


a_n=a_1+(n-1)d\\\\a_n=-8+(n-1)\cdot5\\\\a_n=-8+5n-5\\\\\boxed{a_n=5n-13}

User Kkpattern
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