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If (f(x)=x^2+1) and (g(x)=2x+2), for which (x) is ((f-g)(x)<0) true?यदि (f(x)=x^2+1) और (g(x)=2x+2) हैं, तो ((f-g)(x)<0) किसके लिए सत्य है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (x\ne 1)(x\ne 1)
This item should be checked by solving ((f-g)(x)=x^2-2x-1). The correct interval is between its two roots, so no listed option is fully suitable.((f-g)(x)=x^2-2x-1), इसलिए यह हमेशा ऋणात्मक नहीं है। सही हल के लिए द्विघात असमता हल करनी होती है।
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