EXAMPL(11 Write the following sets in Roster form:
(i) A = {an:n e N, an+ 1 = 3an and a1 = 1}
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Answer:
Given A1 = 1.
When n = 1,
a2 = 3 × a1 = 3 × 1 = 3
when n = 2
a3 = 3 × a2 = 3 × 3 = 9
when n = 3
a4 = 3 × a3 = 3 × 9 = 27 and so on.
so Roster form of given set is
{3,9,27,81....}
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Step-by-step explanation:
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