If A = a b d c " then A is invertible if ad A-1 = 1 ad - bc لا d-b -C a bc # 0, in which case If ad bc = 0, then A is not invertible. Find the inverse of the given matrix (if it exists) using the theorem above. (If this is not possible, enter DNE in any single blank.)

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A: As per guidelines, we will solve only first three subparts. Kindly repost other subparts separately.

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A: If we know how to inverse a matrix process we can solve the above question

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