Consider the function below.f(x)=94x2-x4(a) Find the interval of increase. (Enter your answer using interval notation.)Find the interval of decrease. (Enter your answer using interval notation.)(b) Find the local minimum value(s).(Enter your answers as a comm-separated list. If an answer does not edik, enter ONE.)Find the local maximum value(s).(Enter your answers as a cormma-separated list, If an answer does not exist, enter DNE.)(c) Find thefinflection points.(x,y)=(,)(smallerx-value) (x,y)=()(Iargerx-value)