3. Answer each of the following questions related to the rank of an m x n...

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3. Answer each of the following questions related to the rank of an m x n matrix A. (a) If a 4x7 matrix A has rank 3, find the dimension of Nulllspace(A) and Rowspace(A). (b) If the null space of an 8 x 7 matrix A is 5-dimensional, what is the dimension of the column space of A? (c) If the null space of an 8 x 5 matrix A is 3-dimensional, what is the dimension of the row space of A? (d) If A is a 7 x 5 matrix, what is the largest possible rank of A? (e) If A is a 5 x 7 matrix, what is the largest possible rank of A? 3. Answer each of the following questions related to the rank of an m x n matrix A. (a) If a 4x7 matrix A has rank 3, find the dimension of Nulllspace(A) and Rowspace(A). (b) If the null space of an 8 x 7 matrix A is 5-dimensional, what is the dimension of the column space of A? (c) If the null space of an 8 x 5 matrix A is 3-dimensional, what is the dimension of the row space of A? (d) If A is a 7 x 5 matrix, what is the largest possible rank of A? (e) If A is a 5 x 7 matrix, what is the largest possible rank of A?