g , in
engineering, science, social science, and many  other fields For instance, we will learn
how the derivative can be used (i) to determine rate of change of quantities, (ii) to find
the equations of tangent and normal to a curve at a point, (iii) to find turning points on
the graph of a function which in turn will help us to locate points at which largest or
smallest value (locally) of a function occurs We will also use derivative to find intervals
on which a function is increasing or decreasing