Video 7 Introduction to Functions
Hi! My name is Vaibhav, and today we will learn about functions. Functions are very important concept, both for your engineering entrance exams and also to understand various concepts in mathematics. It's a very fundamental concept, and is used to describe a lot of phenomenon, including physical and chemical phenomena. And, also a lot of chapters we will learn further on such as limits, derivatives, continuity or be it any other chapter in mathematics, knowing functions is very important. It is a very fundamental chapter. It has various definitions, and so a lot of use for the next topics that you will learn. So, we will start with an intuitive definition of functions. Something that we will try to understand using examples, and then we will try to go into a more mathematically precise definition. Functions are used to describe, a special relation between two variables. So, here the word "relation" is a mathematical concept that we will understand later; but...