Скачать или смотреть Exercise 2.3| Question # 2 Complete solved| 9th class maths | Punjab board| New book 2025

📘 9th Class Maths | Chapter 2: Logarithms | Exercise 2.3 | Characteristics & Mantissa | Detailed Explanation | Punjab Board

Welcome to this detailed lecture on Exercise 2.3 from Chapter 2: Logarithms for the 9th Class Mathematics (Punjab Board) syllabus. In this video, we will understand Common Logarithms (Base 10) and learn how to find Characteristics and Mantissa using log tables with step-by-step examples.


🔍 Key Concepts You Will Learn

By the end of this lesson, you will be able to confidently use the following key logarithmic rules:
1. Law of Product:
[log(ab) = log a + log b ]
Multiplying two numbers inside a logarithm is the same as adding their logs.
2. Law of Quotient :
[log (a/b) = log a - log b]
Dividing two numbers inside a logarithm is the same as subtracting their logs.
3. Law of Power:
[ log(a^n) = n log a ]
 
4. Characteristics (Whole number part of log)
  Rules for positive & negative logs
  Example: Number of digits – 1

5. Mantissa (Decimal part of log)
  Always taken from log table and is always positive

6. Usage of Log Tables to find log values correctly


✔ What This Video Covers

✔ Full solution of Exercise 2.3 (Logarithms)
✔ Techniques for Characteristics + Mantissa
✔ How to use log table properly
✔ How to avoid common mistakes
✔ Tricks for board exam short questions
✔ Practice questions for confidence boosting

🎯 Who Should Watch This Video?

9th Class students (Punjab & Federal Board)

Students revising before exams

Teachers preparing lessons

Anyone wanting strong log concepts

📚 Keywords Covered in This Video

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⭐ Why This Lecture Is Important?

✔ Clear and simple explanation
✔ Beginner-friendly approach
✔ Board exam oriented
✔ Strong grip on fundamental log concepts
✔ Practice + Tricks = Better Marks


🔖 Hashtags

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