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If (f:R\to R), (f(x)=|x|), what is (f^{-1}({2}))?यदि (f:R\to R), (f(x)=|x|), तो (f^{-1}({2})) क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ({-2,2})({-2,2})
Step 1: To find the preimage, solve (|x|=2). Step 2: This gives (x=2) or (x=-2). Step 3: Therefore (f^{-1}({2})={-2,2}).चरण 1: पूर्वछवि निकालने के लिए (|x|=2) हल करें। चरण 2: इससे (x=2) या (x=-2) मिलता है। चरण 3: इसलिए (f^{-1}({2})={-2,2}) है।
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