what will be the values for the following?

1. 4^1/2 (4 raised to 1/2)
2. 4^-1/2 (4 raised to -1/2)

For number 1, my answer is 2. I hope I am right. For number 2, I don't have an answer yet.

4 ^ ( 1 / 2 ) = sqrt ( 4 ) = + OR - 2

4 ^ ( - 1 / 2 ) sqrt ( 1 / 4 ) = + OR - 1 / 2