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If (f:R\to R), (f(x)=x^2), what is (f^{-1}({4}))?यदि (f:R\to R), (f(x)=x^2), तो (f^{-1}({4})) क्या होगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ({-2,2})({-2,2})
Step 1: For the preimage, solve (x^2=4). Step 2: This gives (x=2) or (x=-2). Step 3: Therefore (f^{-1}({4})={-2,2}).चरण 1: पूर्वछवि के लिए (x^2=4) हल करें। चरण 2: इससे (x=2) या (x=-2) मिलता है। चरण 3: इसलिए (f^{-1}({4})={-2,2}) है।
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