Or the function f given above, determine whether the following conditions are true. input t if the condition is ture, otherwise input f . (a) f′(x)< 0 if 00 if x> 2; f (c) f″(x)< 0 if 0≤x< 1; t (d) f″(x)> 0 if 14; t (f) two inflection points of f(x) are, the smaller one is x= 2 and the other is x= 2