Class 12 Maths | Chapter 1 Relations and Functions | Exercise 1.2 Complete Solutions | NCERT 2026-27

🚀 **NCERT Class 12 Maths Chapter 1 Exercise 1.2 Complete Solutions | Relations and Functions | CBSE 2026-27 | One-One & Onto Functions** Welcome to another comprehensive mathematics lesson! In this video, I have explained the *complete solutions of NCERT Class 12 Mathematics Chapter 1 – Relations and Functions, Exercise 1.2* in a simple, logical, and exam-oriented manner. Every solution has been discussed step by step so that students can easily understand the concepts and solve similar questions confidently in their examinations. This video is specially designed for **CBSE Class 12 students**, as well as learners preparing for school exams, unit tests, half-yearly exams, pre-board examinations, and competitive exams where a strong understanding of functions is essential. The explanations focus on conceptual clarity rather than rote learning, helping students build a solid mathematical foundation. Throughout this video, you will learn important concepts such as **one-one (injective) functions, onto (surjective) functions, bijective functions, greatest integer function, modulus function, signum function, function mappings, and methods to determine whether a function is injective, surjective, or bijective**. Each problem is solved using clear mathematical reasoning and board-exam-friendly methods. If you are looking for **NCERT Class 12 Maths Exercise 1.2 complete solutions**, **Relations and Functions Chapter 1**, or **CBSE Class 12 Maths Chapter 1 explanations**, then this video is the perfect resource for your preparation. Whether you are revising before your board exams or studying the chapter for the first time, this lesson will help strengthen your concepts and improve your problem-solving skills. I regularly upload complete NCERT Mathematics solutions, chapter-wise explanations, important questions, previous year questions, board exam strategies, and concept-based lectures for Class 12 students. Make sure to subscribe and turn on the notification bell so you never miss future uploads. ⭐ If you found this video helpful, please: 👍 Like the video 💬 Leave your doubts in the comments 📤 Share it with your friends and classmates 🔔 Subscribe for more NCERT Maths solutions and board exam preparation videos ⏱️ *Timestamps (58:00 Video)* 00:00 Introduction 01:05 Concept Overview 03:10 Solution Begins 08:30 Detailed Explanation 15:40 Important Concept Discussion 22:30 Next Set of Questions 30:20 Function Analysis & Tricks 37:40 Advanced Problems 45:10 Board Exam Tips During Solutions 51:30 MCQ Discussion 56:30 Final Revision 57:40 Conclusion 📌 *Topics Covered* • NCERT Class 12 Maths Chapter 1 • Relations and Functions • Exercise 1.2 Complete Solutions • One-One Function • Injective Function • Onto Function • Surjective Function • Bijective Function • Greatest Integer Function • Modulus Function • Signum Function • Function Mapping • CBSE Board Exam Preparation • Class 12 Mathematics • NCERT Solutions • Important Maths Concepts • Step-by-Step Solutions *SEO Keywords:* NCERT Class 12 Maths, Class 12 Maths Chapter 1, Relations and Functions, Exercise 1.2 Solutions, NCERT Exercise 1.2, Relations and Functions Class 12, One One Function, Injective Function, Onto Function, Surjective Function, Bijective Function, Greatest Integer Function, Modulus Function, Signum Function, NCERT Maths Solutions, CBSE Class 12 Maths, CBSE Board Exam 2027, Class 12 Board Maths, Mathematics Chapter 1, NCERT Relations and Functions, Class 12 Maths Solutions, NCERT Complete Solutions, Board Exam Preparation, JEE Foundation Maths, Functions Class 12, Maths Tutorial, CBSE Maths Solutions, Chapter 1 Exercise 1.2, Class 12 NCERT Mathematics, Complete Maths Solution. #class12maths #ncertsolutions #ncertclass12thmath #relationsandfunctions 🔥Follow the Pie Factor Family channel on WhatsApp: https://whatsapp.com/channel/0029Vb7v...