The study materials authored by S. Rajan, M.Sc., M.Phil., M.Ed.
Calculus: Includes continuity, differentiability, and application of integrals.
Practically, the study material excels as a board exam and entrance exam primer. The 2021 syllabus, often streamlined due to pandemic-related learning disruptions, demanded crisp, high-yield content. S. Rajan’s material typically includes:
A. Official Channels (Recommended)
- Local bookstores in Tamil Nadu – Especially in Chennai, Coimbatore, Madurai (ask for “S Rajan Maths Series 2021”).
- School libraries – Many CBSE and state-board schools purchased bulk copies in 2021.
- Direct contact – Some teachers still share the PDF via educational Telegram groups (verify authenticity).
📌 Simplified Theory: Every chapter begins with a concise summary of formulas and definitions.
is a comprehensive guide specifically designed for English Medium students, covering the complete Class 12 syllabus with a focus on solved examples and exam preparation. www.scribd.com Overview of S. Rajan's Study Material
2.2 Important Problems
Problem: Find the square root of $-8 - 6i$. Solution: Let $\sqrt-8-6i = a + ib$. Squaring both sides: $-8 - 6i = a^2 - b^2 + 2abi$. Equating real and imaginary parts: