Consider polynomial function f.
dropdown 1 (3,2,1)
dropdown 2(3,2,1)
dropdown 3 (-1 only, 1 only,-3 and 1 only,-3 -1 and 1, 3 only)

Consider polynomial function f dropdown 1 321 dropdown 2321 dropdown 3 1 only 1 only3 and 1 only3 1 and 1 3 only class=