Which of the following represents the nth term of an arithmetic progression having…

MATHEMATICS · Single correct · CBSE · Mathematics · Arithmetic Progressions · Arithmetic Progressions

Problem

Which of the following represents the nth term ana_n of an arithmetic progression having first term aa and common difference dd? (a) an=a+nda_n = a + nd (b) an=a+(n−1)da_n = a + (n-1)d (c) an=d+(n−1)aa_n = d + (n-1)a (d) an=n2 [2a+(n−1)d]a_n = \dfrac{n}{2}\,[2a + (n-1)d]

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