Question

In an ap the sum of first n terms is 4n-n2.find the firet 2 terms of the ap

Answer 1

Answer:

3 & 1

Step-by-step explanation:

Sn = 4n - n^2

S1 = 4 - 1 = 3

so 1st term = 3

S2 = 8 - 4 = 4

so 2nd term = 4-3 = 1

Answer 2

Answer:

3 & 1

Step-by-step explanation:

Sn = 4n - n^2

S1 = 4 - 1 = 3

so 1st term = 3

S2 = 8 - 4 = 4

so 2nd term = 4-3 = 1