Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

In the proof of \(\sqrt{2}\), what is the first conclusion after getting \(a^2=2b^2\)?

Answer and explanation

Correct answer: \(a^2\) is even

In \(a^2=2b^2\), the right-hand side is a multiple of \(2\), so \(a^2\) is even. The next step is to conclude that \(a\) is also even. We cannot conclude at this stage that \(b\) is odd. Exam tip: In such proofs, first compare the parity of both sides of the equation.

Related tags

Number SystemsSquare Root 2Irrationality ProofParityEven NumbersProof Of Irrationality Of Square Root 2 And Square Root 3MathematicsClass 9 Mcq

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.