The gradient of a curve at a point is given by the gradient of the tangent to the curve at that point. The process of finding the function that gives the exact gradient at any point of a curve is called differentiation.
The value f(x) =gradient function.
Thr gradient function is also known as the derived function, the derivative or the differential coefficient denoted as f' (x) or as dy/dx.
Watch the video clip below which introduces you to a brief explanation of differentiation methods;