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nth Term of an AP

Question 3 ii...

Question

Question 3 (ii)
Write the first three terms of the AP’s, when a and d are as given below:
a = -5, d = - 3

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Solution

Given that,
First term (a) = - 5 and common difference (d) = - 3
nth term of an AP_, $T_{n}$ = a + (n – 1) d
$∴$ Second term of the AP, $T_{2} = a + d = - 5 - 3 = - 8$
Third term of the AP, $T_{3} = a + 2 d = - 5 + 2 (- 3)$
= - 5 - 6 = -11

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, then first three terms are

5, 8, 11

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Question 2 (ii)
Write first four terms of the A.P. when the first term "a" and the common difference "d" are given as follows.
(ii) a = -2, d = 0

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nth Term of an AP

Standard X Mathematics

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