Question Number 113975 by I want to learn more last updated on 16/Sep/20

Find the nth term:   1,  0,  − 1,  0,  1,  0,  − 1,  0,  ...

Answered by Olaf last updated on 16/Sep/20

u_n  = cos(n(π/2))

Commented byI want to learn more last updated on 17/Sep/20

Please workings sir