1. the sum of the first n terms of an arithmetic sequence is n÷2(2n+8).

a) write down the expression for the sum of the first (n-1) terms.

b) find the first term and the common difference of the above sequence.

Question

07-11-2022
Mathematics

Answered

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1. the sum of the first n terms of an arithmetic sequence is n÷2(2n+8).

a) write down the expression for the sum of the first (n-1) terms.

b) find the first term and the common difference of the above sequence.

Sagot :

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1. the sum of the first n terms of an arithmetic sequence is n÷2(2n+8). a) write down the expression for the sum of the first (n-1) terms. b) find the first term and the common difference of the above sequence.​

Sagot :

Other Questions

1. the sum of the first n terms of an arithmetic sequence is n÷2(2n+8).

a) write down the expression for the sum of the first (n-1) terms.

b) find the first term and the common difference of the above sequence.