Mathematics Answer, Explanation and Revision Hints
वास्तविक संख्याओं पर (a*b=a+b+ab) है। (2) का प्रतिलोम क्या है? / On real numbers, (a*b=a+b+ab) is defined. What is the inverse of (2)?
Correct Answer: B. \(-\frac{2}{3}\). Explanation: चरण 1: इस संक्रिया का तत्समक (0) है। चरण 2: (2*b=0) रखने पर (2+b+2b=0) मिलता है। चरण 3: (2+3b=0), इसलिए \(b=-\frac{2}{3}\)। / Step 1: The identity for this operation is (0). Step 2: Put (2*b=0), so (2+b+2b=0). Step 3: (2+3b=0), hence \(b=-\frac{2}{3}\).
Why is option B correct in this Mathematics MCQ?
(2*b=0) रखने पर (2+b+2b=0) मिलता है। / Put (2*b=0), so (2+b+2b=0).
What should I remember for this Mathematics concept?
(2+3b=0), इसलिए \(b=-\frac{2}{3}\)। / (2+3b=0), hence \(b=-\frac{2}{3}\).
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