The nth term of an arithmetic sequence is an = 5 – 6n. Finditssumofn

1.	The nth term of an arithmetic sequence is an = 5 – 6n. Finditssumofnterms?
Answer» n^thterm = 5 - 6n 1^stterm = 5 - 6 x 1 = 5 - 6 = -1 \(S=\frac{n}{2}[f+l]=\frac{n}{2}[-1+5-6n]\) = \(\frac{n}{2}[4-6n]=n(2-3n)=2n-3n^2\)

The nth term of an arithmetic sequence is an = 5 – 6n. Finditssumofnterms?

Answer»

n^thterm = 5 - 6n

1^stterm = 5 - 6 x 1 = 5 - 6 = -1

\(S=\frac{n}{2}[f+l]=\frac{n}{2}[-1+5-6n]\)

= \(\frac{n}{2}[4-6n]=n(2-3n)=2n-3n^2\)

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The nth term of an arithmetic sequence is an = 5 – 6n. Finditssumofnterms?

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