Math, asked by AryanB1966, 1 year ago

Sum of first n terms of an ap is 2nsquare + 3n find its 16 term

Answers

Answered by adityatr
1

Answer:


Step-by-step explanation:

s(0)=2(0) + 3(0) =0

s(1)=2(1)+3(1) = 5

s(2)=2(2)*2+3(2)= 8+6 = 14

now

a_{n}=s_{n} --s_{n-1}  \\so\\a_{1}=s_{1} -s_{0} = 5-0=5\\a_{2}=s_{2} -s_{1}=14-5=11\\\\

so a=5 d=6

a_{16} = 2(5)+15(6)\\=>10+90\\\\=>100

so the 16 th term of the ap is 100


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