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Maths-

General

Easy

Question

Let A and B be two square matrices of the same dimension and let [A, B] = AB - BA. Then for three $2 cross times 2$ matrices A, B, C, [[A, B], C] + [[B, C], A] + [[C, A], B] is equal to

1
0
ABC - CBA
None of these

The correct answer is: 0

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If $stack l i m with n rightwards arrow infinity below fraction numerator n to the power of k end exponent s i n to the power of 2 end exponent invisible function application n factorial over denominator n plus 1 end fraction equals 0$ for

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