If the sum oif the first q term of an ap is 2q+3q2
Answers
Answered by
1
i think you want to find the common difference
So,
sum of 1st q terms= Sq=2q+3q^2
let,q=1,we get S1=2+3=5
let q=2,we get S2=2 (2)+3 (2)^2=4+12=16
T1=S2-S1=16-5=11
Common difference =t2-t1=11-5=6(answer)
So,
sum of 1st q terms= Sq=2q+3q^2
let,q=1,we get S1=2+3=5
let q=2,we get S2=2 (2)+3 (2)^2=4+12=16
T1=S2-S1=16-5=11
Common difference =t2-t1=11-5=6(answer)
Similar questions