Q7. Let A is a 3 x 4 matrix that depends on c: 12 47 28 0 2 2] Then, solve the following questions: (a) For each c, find a basis for the columns space of A. (b) For each c, find a basis for the null space of A. (e) (Use a set notation to For each c, find the complete solution x to Ax = describe your solution if not unique.)

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