फलन (f(x)=\sqrt{x-2-2x+10}) की रेंज क्या है?
What is the range of (f(x)=\sqrt{x-2-2x+10})?
Explanation opens after your attempt
A. \([3,\infty\))
Concept
Inside, (x-2-2x+10=(x-1)2+9), so the minimum is (9). Taking square root gives the range \([3,\infty\)).
Why this answer is correct
The correct answer is A. \([3,\infty\)). Inside, (x-2-2x+10=(x-1)2+9), so the minimum is (9). Taking square root gives the range \([3,\infty\)).
Exam Tip
अंदर (x-2-2x+10=(x-1)2+9) है, इसलिए न्यूनतम (9) है। वर्गमूल लेने पर रेंज \([3,\infty\)) होगी।
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