The sum of first n term of an A.P. is given by sn=2n2+3n.find the sisteenth term of an A.p.
Answers
Answered by
5
HELLO DEAR,
Sn = 2n² + 3n
S1 = 5 = a1
S2 = a1 + a2 = 14
a2 = 9
d = a2 – a1 = 4
a16 = a1 + 15d
a16 = 5 + 15(4) = 65
I HOPE ITS HELP YOU DEAR,
THANKS
Sn = 2n² + 3n
S1 = 5 = a1
S2 = a1 + a2 = 14
a2 = 9
d = a2 – a1 = 4
a16 = a1 + 15d
a16 = 5 + 15(4) = 65
I HOPE ITS HELP YOU DEAR,
THANKS
Similar questions