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In-s [12.5K]
3 years ago
11

Which expression defines the arithmetic series 1+3+5+... for seven terms

Mathematics
2 answers:
lutik1710 [3]3 years ago
8 0
1+3+5+7+9+11+13+15+17+19 is the answer. Hopefully this helped!! :)
nydimaria [60]3 years ago
3 0

Answer: The expression for arithmetic series for seven terms is given by

\sum_{n=1}^{n=7}(2n-1)

Step-by-step explanation:

Since we have given that

1+3+5+..................

Here, a = 1

d= common difference = a₂-a₁=3-1=2

n = 7

We need to write the arithmetic series for seven terms:

\sum_{n=1}^{n=7}(2n-1)

Hence, the expression for arithmetic series for seven terms is given by

\sum_{n=1}^{n=7}(2n-1)

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