Question: Use the fact that if Aequalsleft bracket Start 2 By 2 Matrix 1st Row 1st Column a 2nd Column b 2nd Row 1st Column c

Use the fact that if Aequalsleft bracket Start 2 By 2 Matrix 1st Row 1st Column a 2nd Column b 2nd Row 1st Column c 2nd Column d EndMatrix right bracket , then Upper A Superscript negative 1equalsStartFraction 1 Over ad minus bc EndFraction left bracket Start 2 By 2 Matrix 1st Row 1st Column d 2nd Column negative b 2nd Row 1st Column negative c 2nd Column a EndMatrix right bracket to find the inverse of the matrix, if possible. Check that AA Superscript negative 1 Baseline equals Upper I 2 and Upper A Superscript negative 1 Baseline Upper A equals Upper I 2 . Aequalsleft bracket Start 2 By 2 Matrix 1st Row 1st Column 2 2nd Column negative 1 2nd Row 1st Column negative 1 2nd Column negative 1 EndMatrix right bracket

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