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Question
Write the first four terms of the A.P. when the first term a and the common difference d are given.
a = 3, d = 0
Sum
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Solution
Given:
a = 3, d = 0.
Compute the first four terms using a_n = a + (n − 1)d:
= 3
a2 = a + (2 − 1)d
= 3 + 1 × 0
= 3
a3 = a + (3 − 1)d
= 3 + 2 × 0
= 3
a4 = a + (4 − 1)d
= 3 + 3 × 0
= 3
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Chapter 9: Arithmetic and geometric progression - Exercise 9A [Page 173]
