कौन-सा फलन अपने ग्राफ में (y)-अक्ष के प्रति सममित है लेकिन (x)-अक्ष को नहीं काटता?
Which function has a graph symmetric about the (y)-axis but does not cut the (x)-axis?
Explanation opens after your attempt
Correct Answer
A. \(y=x^2+1\)
Concept
\(x^2+1\) is an even function and its minimum is (1), so it does not cut the (x)-axis. In exams, check both symmetry and minimum value.
Why this answer is correct
The correct answer is A. \(y=x^2+1\). \(x^2+1\) is an even function and its minimum is (1), so it does not cut the (x)-axis. In exams, check both symmetry and minimum value.
Exam Tip
\(x^2+1\) सम फलन है और इसका न्यूनतम (1) है इसलिए (x)-अक्ष नहीं कटता। परीक्षा में सममिति और न्यूनतम दोनों जांचें।
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