Functions- Defination, Notes 

we delve into the fascinating world of functions, exploring their definition, properties, and applications. Learn about the fundamental concepts such as domain, range, and mapping, and discover various types of functions including linear, quadratic, exponential, and trigonometric functions. Dive into the concept of function composition and understand how functions can be combined to create new functions. Explore real-world applications of functions in fields such as physics, economics, and computer science.