फलन (f(x)=\sqrt{x-2+6x+13}) की रेंज क्या है?
What is the range of (f(x)=\sqrt{x-2+6x+13})?
Explanation opens after your attempt
A. \([2,\infty\))
Concept
Inside, (x-2+6x+13=(x+3)2+4), so the minimum is (4) and the range is \([2,\infty\)). In exams complete the square inside first.
Why this answer is correct
The correct answer is A. \([2,\infty\)). Inside, (x-2+6x+13=(x+3)2+4), so the minimum is (4) and the range is \([2,\infty\)). In exams complete the square inside first.
Exam Tip
अंदर (x-2+6x+13=(x+3)2+4) है, इसलिए न्यूनतम (4) और रेंज \([2,\infty\)) है। परीक्षा में पहले अंदर का पूर्ण वर्ग बनाएं।
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