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If (a\ast b=a+b-1), what is the identity element of this operation?यदि (a\ast b=a+b-1), तो इस क्रिया का तत्समक अवयव क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (1)(1)
Step 1: Put (a\ast e=a). Step 2: From (a+e-1=a), we get (e=1). Also, (e\ast a=e+a-1=a) gives (e=1). Step 3: To find identity, assume (e) and form an equation.चरण 1: (a\ast e=a) रखें। चरण 2: (a+e-1=a) से (e=1) मिलता है। (e\ast a=e+a-1=a) भी (e=1) देता है। चरण 3: तत्समक निकालते समय (e) को अज्ञात मानकर समीकरण बनाएं।
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