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On (\mathbb{R}), (a*b=a+b+3ab). What is the inverse of (2)?(\mathbb{R}) पर (a*b=a+b+3ab) है। (2) का प्रतिलोम क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (-\frac{2}{7})(-\frac{2}{7})
Step 1: The identity is (0). Step 2: From (2*b=0), (2+b+6b=0), so (2+7b=0). Step 3: (b=-\frac{2}{7}); combine the terms containing (b) carefully.चरण 1: तत्समक अवयव (0) है। चरण 2: (2*b=0) से (2+b+6b=0), अर्थात (2+7b=0)। चरण 3: (b=-\frac{2}{7}); गुणांक जोड़ते समय (b) वाले पदों को साथ रखें।
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