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If (f:\mathbb{R}\to\mathbb{R}) and (f(x)=x^2+x), which pair shows that (f) is not one-one?यदि (f:\mathbb{R}\to\mathbb{R}) और (f(x)=x^2+x) हो तो (f) एकैकी नहीं है यह कौन सा युग्म दिखाता है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (0) and (-1)(0) और (-1)
Step 1: (f(0)=0). Step 2: (f(-1)=1-1=0), while (0\neq-1). Step 3: For a quadratic function, find two inputs with the same value to disprove one-one.चरण 1: (f(0)=0) है। चरण 2: (f(-1)=1-1=0) है जबकि (0\neq-1)। चरण 3: द्विघात फलन में समान मान देने वाले दो आगत ढूँढकर एकैकीपन नकारें।
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