Understanding sets and functions in mathematics from "summary" of RRB ALP Exam PDF-RRB Assistant Loco Pilot Exam-CBT-1-Mathematics Subject eBook by Chandresh Agrawal,Nandini Books
Sets and functions are fundamental concepts in mathematics that form the building blocks for various mathematical theories and applications. A set is a well-defined collection of distinct objects, which can be anything from numbers to shapes to even abstract concepts. Sets are denoted by curly braces {}, and the objects within a set are called elements. Understanding sets involves knowing how to define them, list their elements, and perform operations such as union, intersection, and complement. Functions, on the other hand, are relationships between two sets where each element in the first set (called the domain) is related to exactly one element in the second set (called the codomain). Functions are represented by mapping diagrams, tables, graphs, or algebraic expressions. Functions play a crucial role in mathematics as they help in modeling real-life situations, analyzing data, and solving equations. One important aspect of understanding sets and functions is knowing how to de...
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