If A is invertible, then adj(A) is invertible and ladi(Al-da A= adjA The set of all...

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If A is invertible, then adj(A) is invertible and ladi(Al-da A= adjA The set of all ordered pairs (x, y) with the operations (K v.)+ (x Y)-(x+YYs+ X1) d k(x, y) = (kx, ky) is not a vector space. If A is invertible, then adj(A) is invertible and ladi(Al-da A= adjA The set of all ordered pairs (x, y) with the operations (K v.)+ (x Y)-(x+YYs+ X1) d k(x, y) = (kx, ky) is not a vector space.