sum of n term of AP is 7n² -2n find the 10 term
Answers
Answered by
2
If the sum of first n term of an AP is given by Sn = 6n+7n². Then find nth term of the AP, also find 10th term of the AP ...
Step-by-step explanation:Sn=6n+7n2a1=S1=6*1+7+1^2=6+7=13S2=a2=6*2+7*2^212+7*4=12+28=40d=a2-a1=40-13=27An=a+(n-1)da10=13+(10-1)2713+9*27=13+243=256
Similar questions