फलन (f(x)=x-2-6x+11) की रेंज क्या है?
What is the range of (f(x)=x-2-6x+11)?
Explanation opens after your attempt
A. \([2,\infty\))
Concept
(x-2-6x+11=(x-3)2+2), so the minimum is (2). In exams completing the square gives the range quickly.
Why this answer is correct
The correct answer is A. \([2,\infty\)). (x-2-6x+11=(x-3)2+2), so the minimum is (2). In exams completing the square gives the range quickly.
Exam Tip
(x-2-6x+11=(x-3)2+2), इसलिए न्यूनतम (2) है। परीक्षा में पूर्ण वर्ग विधि से रेंज जल्दी मिलती है।
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