For the polynomial function f(x) = -0.02x4+.36x2 - 1.62,

Last updated: 7/20/2022

For the polynomial function f(x) = -0.02x4+.36x2 - 1.62, find all local and global extrema. No local extrema exist. The only extrema point is (-1.62, 0). The only extrema point is (9, 0). The local and global extrema are: (-3, 0), (0, -1.62) and (3, 0).