Maths, Optimisation, Calculus, Numerical Methods, Differential Equations.
little hump that looks like a hill, which is known as a maximum and if we draw a line on top that is ‘tangent’ to the curve it is flat (or its gradient is zero). gradient at the turning point (made with Desmos) This is the same for the dip in the graph at about 1.1, this on the other hand is called