Year 12 maths · E.4 · Sequences and Series
Find the sum of a series
Work out each term and add them.
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Find the sum of −3k + 3 for k = 1, 2, 3, …, 5.
Answer: -30
Find the sum of −4k − 3 for k = 1, 2, 3, …, 4.
Answer: -52
Find the sum of −k + 3 for k = 1, 2, 3, …, 7.
Answer: -7
Tip: Work out each term and add them.
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