👉 Learn the basics of graphing a tangent and a cotangent function. To plot the tangent and the cotangent graph, we choose a set of points and form a table of values with which we plot the points on ...

👉 Learn how to determine the extrema, the intervals of increasing/decreasing, and the concavity of a function from its graph. The extrema of a function are the points where the graph changes from ...

A function is a rule that is applied to one set of values to give another set of values. A function can be illustrated on a graph – points are plotted as coordinates and joined by either a straight ...