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 √3, what kind of step is it to write directly that v is divisible by 3 from u² = 3v²?

Answer and explanation

Correct answer: It is incomplete; first set u = 3t

The governing idea is that the divisibility argument must be carried out in two justified stages. From u²=3v², the right-hand side is divisible by 3, so 3 divides u². Because 3 is prime, 3 divides u; therefore write u=3t for an integer t. Substituting gives 9t²=3v², and dividing by 3 gives v²=3t². Only now is v² visibly divisible by 3, allowing the prime-square rule to prove 3 divides v. Thus v is not obtained directly from the original equation without explanation. Option A correctly identifies the missing intermediate step. The other choices either accept an unsupported conclusion or discuss unrelated denominator and decimal issues.

Related tags

Number-SystemsDivisibilityError-AnalysisSqrt3Proof Of Irrationality Of Square Root 2 And Square Root 3Number SystemsMathematicsClass 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.