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8.03 Arithmetic series

Interactive practice questions

The sum of the terms of a sequence is:

always divergent

A

a series

B

always finite

C
Easy
< 1min

Find the sum of the first $10$10 terms of the arithmetic sequence defined by $T_1=6$T1=6 and $T_{10}=3.5$T10=3.5.

Easy
1min

Find the sum of the first $10$10 terms of the arithmetic sequence defined by $T_1=-8$T1=8 and $T_{10}=-2.75$T10=2.75.

Easy
1min

Find the sum of the first $20$20 terms of the arithmetic sequence defined by $T_1=\pi$T1=π and $T_{20}=20\pi$T20=20π.

Easy
1min
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Outcomes

ACMMM071

establish and use the formula for the sum of the first n terms of an arithmetic sequence

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