The function f(x)=2x333x2+108x+7\displaystyle {f{{\left({x}\right)}}}={2}{x}^{{3}}-{33}{x}^{{2}}+{108}{x}+{7} has one local minimum and one local maximum.
This function has a local minimum at x\displaystyle {x} equals  

with value  


and a local maximum at x\displaystyle {x} equals  

with value