Question

nth term of ap 1,-3,-7​

Answer 1

Answer:

5 - 4n

Step-by-step explanation:

a1 = 1 a2 = -3 a3 = -7

d = -4

a2 - a1 = a3 - a2

- 3 - 1 = - 7 - (-3)

-4 = - 4

nth term an = a + (n-1)d

= 1 + (n-1)(-4)

= 1 + (-4n + 4)

= 1 - 4n + 4

= 5 - 4n

therefore the nth term of AP is 5 - 4n

hope you get your answer