12th Mathematics Chapter Study Material English Medium 2021 By S Rajan M Sc M Phil M Ed «100% ORIGINAL»
Comprehensive Guide: 12th Mathematics Chapter Study Material (English Medium) 2021 by S. Rajan M.Sc., M.Phil., M.Ed.
Chapter 3: Matrices
- Key Topics: Order, types, operations, transpose, symmetric/skew-symmetric, elementary operations.
- 2021 Addition: Extra solved problems on “Invertible matrices” – a frequent 3-mark question.
- S. Rajan’s Mnemonic: “ROw before COlumn” for matrix multiplication order.
Unit VI: Applications of Derivatives
- Topics: Tangent & normal, maxima-minima, rate of change.
- 2021 Focus: Word problems on cost, revenue, and profit – relevant for commerce + maths students.
Testimonials from 2021–22 Batch Students
“I failed in half-yearly maths. After following S. Rajan’s material for 2 months, I scored 82 in boards. The common error boxes saved me from silly mistakes.”
— Priya S., CBSE 2022
“The integration chapter in this book is pure gold. Every type of problem is covered with a method name. I never feared calculus again.”
— Rohit M., Bihar Board 2021 Unit VI: Applications of Derivatives
“S. Rajan’s English medium explanations are crisp. No unnecessary jargon. Perfect for self-study during COVID lockdown.”
— Anjali K., UP Board 2021 UP Board 2021