Suppose A is a 4 × 4 matrix and b is a vector in 4, with
Chapter 1, Problem 36E(choose chapter or problem)
Problem 36E
Suppose A is a 4 × 4 matrix and b is a vector in ℝ4, with the property that Ax = b has a unique solution. Explain why the columns of A must span ℝ4.
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