Question

if tn= 5n -2 then AP is??? ​

Answer 1

Answer:

tₙ = 5n - 2

when n = 1

a = 5 - 2 = 3

when n = 2

a₂ = 10 - 2 = 8

when n = 3

a₃ = 15 - 2 = 13

when n = 4

a₄ = 20 - 2 = 18

∴ AP = a , a₂ , a₃ , a₄ .......

∴ AP =  3 , 8 , 13 ,18 ....... (with d = a₂ - a = 8 - 3 = 5)

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