PROBLEM SOLVING TECHNIQES OF NUMBER SYSTEM
Here are more detailed examples and problem-solving techniques from Chapter 1 of CBSE Class 9 Maths (Number Systems): 1. Proving Irrationality Example 1: Prove that 2\sqrt{2} is irrational. Steps: Assume 2\sqrt{2} is rational. Then, 2=pq\sqrt{2} = \frac{p}{q}, where pp and qq are integers, and q≠0q \neq 0. Squaring both sides: 2=p2q22 = \frac{p^2}{q^2}, so p2=2q2p^2 … Read more