The sum of first n terms of an AP is given by Sn= 2n^2 + 3n . Find the sixteenth term of the AP. (urgent)
Answers
Answered by
6
Heya,
Sn = 2n² +3n ( given)
S1 = 2 (1) ² + 3 (1)
= 5
so, a = 5
S2 = 2 (2)² + 3 (2)
= 8 + 6
= 14
a2 = S2-S1
=14 - 5
= 9
d = 9 - 5
=4
a16 = a + 15d
= 5 + 15(4)
=65
Hope it helps u........
Sn = 2n² +3n ( given)
S1 = 2 (1) ² + 3 (1)
= 5
so, a = 5
S2 = 2 (2)² + 3 (2)
= 8 + 6
= 14
a2 = S2-S1
=14 - 5
= 9
d = 9 - 5
=4
a16 = a + 15d
= 5 + 15(4)
=65
Hope it helps u........
HARIPRIYAN:
very helpful
Answered by
0
Answer:
the answer for this given question is 65
Similar questions