The graph of f(x)=cosx ____________________ . Therefore, a domain restriction must be placed on the function for the inverse function to be defined. The domain restriction placed on f(x)=cosx is __________ so that its inverse function is defined.
Fill in the blank options =
1. does not pass the vertical line test
2. does not pass horizontal line test
3. is one to one
4. (-π/2, π/2)
5. (0, π/2)
6. (0, π)
7. [-π/2, π/2]
8. [0, π/2]
9. [0,π]
