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If (f(x)=x^2+1) and (g(x)=2x), what is the minimum value of ((f-g)(x))?यदि (f(x)=x^2+1) और (g(x)=2x) हैं, तो ((f-g)(x)) का न्यूनतम मान क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (0)(0)
((f-g)(x)=x^2-2x+1=(x-1)^2), whose minimum is (0). Completing the square is useful in such questions.((f-g)(x)=x^2-2x+1=(x-1)^2), जिसका न्यूनतम (0) है। पूर्ण वर्ग बनाना ऐसे प्रश्नों में उपयोगी है।
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