It's somewhat confusing the way you've written the question (e.g., it's not clear if by S^2(n) you mean S^2*n or S(n)^2 or what)...
Answered 5 years ago
Choose your country to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a location from the following list:
See all countries