Question

Tn=5-4 n find the first fore terms

Answer 1

Tn = 5 - 4n

=> a + (n-1) d = 5 - 4n

=> a + (n-1) d = 1 + 4 - 4n

=> a + (n-1) d = 1 - 4(n-1)

On Comparing both sides, we get

a = 1

d = - 4

T1 = a = 1

T2 = a + d = 1 - 4 = - 3

T3 = a + 2d = 1 - 8 = - 7

T4 = a + 3d = 1 - 12 = - 11