Let A be a 7 times 4 matrix What must a and b be in order to

Let A be a 7 times 4 matrix. What must a and b be in order to define T RarightarrowRb by T(x) = Ax ? a =

Solution

a=4

If one considers the matrix as a linear transformation from Rn to Rm, then the column space of the matrix equals the image of this linear transformation.

 Let A be a 7 times 4 matrix. What must a and b be in order to define T RarightarrowRb by T(x) = Ax ? a = Solutiona=4 If one considers the matrix as a linear tr

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