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Which function has a graph symmetric about the (y)-axis but does not cut the (x)-axis?कौन-सा फलन अपने ग्राफ में (y)-अक्ष के प्रति सममित है लेकिन (x)-अक्ष को नहीं काटता?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (y=x^2+1)(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.(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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