Question

The sum og first n odd natural no is 2n_1 2n+1 n^_1 n^​

Answer 1

Answer: n²

Step-by-step explanation:

The odd numbers are in AP.

1, 3, 5,...

a = 1

d = 3 - 1 = 2

a_n = dn + a - d = 2n + 1 - 2 = 2n - 1

S_n = n/2[a + a_n] = n/2[1 + 2n - 1] = n/2 × 2n = 2n² / 2 = n²

Thank you.