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Question
Write the first five terms of the sequences whose nth term is:
`a_n = n(n+2)`
Solution
an = n(n + 2)
By keeping the value of n as 1, 2, 3, 4, 5
a1 = 1 × 3 = 3,
a2 = 2 × 4 = 8,
a3 = 3 × 5 = 15,
a4 = 4 × 6 = 24,
a5 = 5 × 7 = 35
Hence, the five terms of the given sequence are 3, 8, 15, 24, 35.
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