5. (Bv)−1=⎛⎝⎜⎜⎜⎜⎜⎜11−v2−−−−−√0v1−v2−−−−−√010v1−v2−−−−−√011−v2−−−−−√⎞⎠⎟⎟⎟⎟⎟⎟(Bv)−1=(11−v20v1−v2010v1−v2011−v2)
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