Find the limits as x - w and as x -> -co. (If the limit is infinite, enter 'co' or '-co', as appropriate. If the limit does not otherwise exist, enter DNE.) f(x) = 5x3 - x4 lim f(x) = X -+ 00 lim f( x ) = X - - 00 Use this information, together with intercepts, to give a rough sketch of the graph as in this example. X X -6 N N O E