Know More About Rounding Fractions To The Nearest Whole Number A function can be increased at some values or decrease on some other values. The value where the function gets changed is called the turning point and a turning point is a part of stationary point. This is the technique to find out the minima and maxima on the graph. Another way to explain differentiation is its applications. The use of differentiation is in the increasing or decreasing functions. Explain Differentiation