alexaguayza6
04.06.2020 •
Mathematics
If A is a square matrix such that A^2=2I,then A^-1=?
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Ответ:
Recall that
, so
Multiply on the right by
and regroup terms:
and finally solve for
:
Ответ:
5
Step-by-step explanation:
1+1+1+1+1=5 = the best answer
=I hope it help