WBJEE 2021 Math Solved Paper
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CATEGORY - I (Q:1 to Q50)
Carry 1 mark each and only one option is correct. In case of incorrect answer or any combination of more than one answer, ¼ mark will be deducted.
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Question : 18 of 75
Marks:
+1,
-0
Let A B A B = B A A 2 B 2 ( A T B ) − 1 ( A B − 1 ) T
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