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Question
Find the first term and common difference of the Arithmetic Progressions whose nth term is given below
tn = – 3 + 2n
Solution
a = t1 = – 3 + 2(1)
= – 3 + 2 = – 1
d = t2 – t1
Here t2 = – 3 + 2(2)
= – 3 + 4 = 1
∴ d = t2 – t1
= 1 – (– 1) = 2
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