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If (f:\mathbb{R}\to\mathbb{R}), (f(x)=x^2+2x), which statement is correct for (f)?यदि (f:\mathbb{R}\to\mathbb{R}), (f(x)=x^2+2x), तो (f) के लिए सही कथन कौन-सा है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: It is not one-oneएकैकी नहीं है
Step 1: (x^2+2x=(x+1)^2-1). Step 2: (f(0)=0) and (f(-2)=0), while (0\neq -2). Step 3: Converting to square form helps find equal images easily.चरण 1: (x^2+2x=(x+1)^2-1)। चरण 2: (f(0)=0) और (f(-2)=0), जबकि (0\neq -2)। चरण 3: वर्ग रूप में बदलकर समान छवियाँ आसानी से खोजी जा सकती हैं।
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