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

Which option states the correct hidden principle used in the proof of \(\sqrt{2}\) is irrational?

Answer and explanation

Correct answer: If \(p\) is a prime and \(p\mid a^2\), then \(p\mid a\).

In the standard proof of irrationality of \(\sqrt{2}\), we assume \(\sqrt{2}=\frac{p}{q}\) in lowest terms, giving \(2q^2=p^2\). Then \(2\mid p^2\). The key step needed is: for a prime \(2\), if \(2\mid p^2\), then \(2\mid p\). This exactly matches the principle in option A. The other options are not the correct divisibility rule used at that step.

Related tags

Irrationality\Sqrt{2}Prime DivisibilityHidden PrincipleNumber Theory

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.