Question:
If matrices $\mathrm{A}$ and $\mathrm{B}$ anticommute then
A. $\mathrm{AB}=\mathrm{BA}$
B. $\mathrm{AB}=-\mathrm{BA}$
C. $(A B)=\left(B A^{-1}\right)$
D. None of these
Solution:
If $A$ and $B$ anticommute then $A B=-B A$
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