Matrices and will be inverse of each other only if

MATHEMATICS · Single correct · AP · AP Precalculus · Functions with Parameters, Vectors, and Matrices · Functions with Parameters, Vectors, and Matrices

Problem

1. Matrices AA and BB will be inverse of each other only if (A) mathrmAB=mathrmBA mathrm{AB}= mathrm{BA} (B) mathrmAB=mathrmBA=0 mathrm{AB}= mathrm{BA}=0 (C) mathrmAB=0,mathrmBA=mathrmI mathrm{AB}=0, mathrm{BA}= mathrm{I} (D) mathrmAB=mathrmBA=mathrmI mathrm{AB}= mathrm{BA}= mathrm{I}

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