Observation 1. Consider two lines with equations and in -plane. There are three possible cases: 1. The two lines could intersect in one point. 2. The […]

Observation 1. Suppose we are asked to find a function such that if we differentiate it, we get . Anyone who has studied differentiation will suggest […]

Example 1. Suppose we are given for all in . Since the function is continuous and the given interval is closed, the Extreme Value Theorem guarantees […]