For n e N, prove that sigma k=1 n (-1)^k.k^2=(-1)^n

Name: For n e N, prove that sigma k=1 n (-1)^k.k^2=(-1)^n
Uploaded: 2024-04-12T11:46:43.000Z
Duration: PT9M10.87S
Description: For n e N, prove that sigma k=1 n (-1)^k.k^2=(-1)^n (n(n+1))/2.