Question

s(k)=k(k+1)/2 derive it please​

Answer 1

Answer:

s(k) = k(k+1)/2

s(k)= 2k + k/2

s(k) =3k/2

k=3/2

please mark it as brainliest...

Answer 2

Answer:

s(k) = 3/2 is the answer mate...