To Find: nth term of the AP
Given: The series is 8, 3, –2, –7, –12, ….
a1=8, a2= 3 and d= 3–8= –5
(Where a=a1 is first term, a2 is second term, an is nth term and d is common difference
of given AP)
Formula Used: an = a + (n – 1)d
an= a1 + (n – 1)( –5) = 8– (5n–5) = 8– 5n + 5 = 13– 5n
So the nth term of AP is equal to 13– 5n
Find the nth term of the AP 8, 3, –2, –7, –12, ….
Find the nth term of the AP 8, 3, –2, –7, –12, ….