फलन (f(x)=-(x-1)2+4) का अधिकतम मान क्या है?
What is the maximum value of (f(x)=-(x-1)2+4)?
Explanation opens after your attempt
C. (4)
Concept
Because the coefficient is negative, the parabola opens downward and the vertex (y)-value (4) is maximum. In exams, the vertex is maximum for a downward parabola.
Why this answer is correct
The correct answer is C. (4). Because the coefficient is negative, the parabola opens downward and the vertex (y)-value (4) is maximum. In exams, the vertex is maximum for a downward parabola.
Exam Tip
ऋणात्मक गुणांक के कारण परवलय नीचे खुलता है और शीर्ष का (y)-मान (4) अधिकतम है। परीक्षा में नीचे खुलने वाले परवलय में शीर्ष अधिकतम होता है।
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