Question

If An=(-1) to the power n , then the correct relation between the sum of term is. please answer this question and answer should be S2=S4. I need the method. if u know the method means only answer other wise don't post irrelevant answer​

Answer 1

Answer:

an =(-1) n

Step-by-step explanation:

sn =n/2 (2a+(n-1)d

Answer 2

Answer:

an=(-1)+n

sn=n_2(2a+(n-1)×d