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

If f(x) = 1/(|x| - 2), what is the domain?

Answer and explanation

Correct answer: R \ {-2, 2}

The only restriction comes from the denominator: it cannot equal zero. Set |x| - 2 = 0, which gives |x| = 2. An absolute-value equation |x| = 2 has two real solutions, x = 2 and x = -2. Both must therefore be removed from the real numbers. There is no square root or logarithm imposing any additional condition, and the absolute-value expression itself is defined for every real x. Hence the domain is R \ {-2, 2}, which is option A. Option B forgets the negative solution, option C retains only the interval between the excluded points even though many outside values are allowed, and option D removes too many valid inputs. Thus A is the unique correct answer.

Related tags

DomainAbsolute-ValueRational-FunctionsReal Valued FunctionsTheir Domain And RangeReal Valued Functions Their Domain And RangeRelations And FunctionsMathematicsClass 11 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.