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 \(x\) is a real number, which of the following statements is always true?

Answer and explanation

Correct answer: \(x^2+1>0\)

For every real number \(x\), we have \(x^2\geq 0\). Therefore, \(x^2+1\geq 1\), which proves that \(x^2+1>0\) is always true. Options B, C and D can be false for particular values; for example, at \(x=0\), B and D are false, while C is never true for a real number. Exam tip: the square of a real number is never negative.

Related tags

Linear InequalitiesInequalitiesReal NumbersQuadratic ExpressionsClass 11Introduction To InequalitiesMathematicsClass 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.