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+1), g(x)=1/(x−1), and h(x)=f(x)+g(x), what is h(x)?

Answer and explanation

Correct answer: 2x/(x²−1), x≠±1

The governing concept is addition of rational functions using a common denominator. Start with h(x)=1/(x+1)+1/(x−1). The least common denominator is (x+1)(x−1)=x²−1. Combining the numerators gives h(x)=[(x−1)+(x+1)]/[(x+1)(x−1)]. The numerator simplifies to x−1+x+1=2x, while the denominator remains x²−1. Therefore h(x)=2x/(x²−1). The original expressions are undefined at x=−1 and x=1, so both restrictions must be stated even though the result has been combined into one fraction. Option A includes the correct numerator, denominator, and domain. Option B loses the factor x, option C introduces an incorrect negative sign, and option D loses the factor 2. Thus only option A is mathematically complete.

Related tags

Relations-And-FunctionsAddition-Of-FunctionsRational-FunctionsCommon-DenominatorAlgebra Of Real FunctionsRelations 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.