Teaching UP TGT Mock Test Series 2025 Engineering Mathematics Linear Algebra Matrix Algebra

A एक अदिश आव्यूह है जिसकी कोटि 3 का अदिश k ≠ 0 है। तब A-1 कितना है?

1
\(\frac{1}{{{k^2}}}{\rm{I}}\)
2
\(\frac{1}{{{k^3}}}{\rm{I}}\)
3
\(\frac{1}{k}{\rm{I}}\)
4
\(kI\)
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