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The graph of (f(x)=\frac{x}{|x|}) is like which function when (x\ne0)?फलन (f(x)=\frac{x}{|x|}) का ग्राफ किस फलन जैसा है जब (x\ne0)?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (f(x)=\operatorname{sgn}(x))(f(x)=\operatorname{sgn}(x))
(\frac{x}{|x|}=1) for (x>0) and (-1) for (x<0). In exams, remember to exclude (x=0) from the domain.(\frac{x}{|x|}=1) जब (x>0) और (-1) जब (x<0) होता है। परीक्षा में (x=0) को प्रांत से हटाना न भूलें।
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