MCQ
$\sin ^{-1}(1-x)-2 \sin ^{-1} x=\frac{\pi}{2}$, તો $x=$ ..........
- A$0, \frac{1}{2}$
- B$1, \frac{1}{2}$
- ✓$0$
- D$\frac{1}{2}$
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$(I)$ $Trace(R)=0$
$(II)$ જો $Trace(\operatorname{adj}(\operatorname{adj}(R))=0$, તો $R$માં બરાબર એક શૂન્યેતર ધટક હોય