October 2018 1 530 Report
Tolong bantuin saya ya? Ini soal matriks.
UMPTN 1991
Diberikan matriks A = \left[\begin{array}{ccc}a&-a\\a&a\end{array}\right] . Himpunan nilai a yang memenuhi hubungan invers a = a transpos adalah...
A. { \sqrt{2} , \sqrt{2} }
B. {1,-1}
C. { \frac{1}{2} \sqrt{2} , -\frac{1}{2} \sqrt{2} }
D. {1/2,-1/2}
E.  \frac{1}{2} \sqrt{2} , -\frac{1}{4} \sqrt{2}

Tolong dikerjakan dengan cara dan disebutkan jawabannya sesuai opsion yang ada. Terima kasih.
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