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Project ID:
2000017105
Accepted:
0
Clonable:
0
Easy:
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Nech \(x\) je reálne číslo. Určte maticu inverznú k matici:
\[
\left (\array{
\cos x& -\sin x \cr
\sin x & \cos x \cr} \right )
\]
\[
\left (\array{
\cos x& \sin x \cr
-\sin x & \cos x \cr} \right )
\]
\[
\left (\array{
1& 0 \cr
0 & 1 \cr} \right )
\]
\[
\left (\array{
\frac{\cos x}{\sin 2x}& \frac{\sin x}{\sin 2x}\cr
-\frac{\sin x}{\sin 2x}& \frac{\cos x}{\sin 2x} \cr} \right )
\]
Inverzná matica neexistuje.
Fixed Answer:
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