Question

the 8th term of an AP is 0.Prove that its 38th term is 3 times its 18th term​

Answer 1

Answer:

Step-by-step explanation:

a +7d= 0

a= -7d

as its the 38th term  

a₃₈ = a +37d

= -7d + 37d  

= 30d

for the 18th term

a₁₈= a +17d

= -7d + 17d

= 10d

so a₃₈ = 3a₁₈