In Exercises 21 through 26, find a redundant column vector of the given matrix A, and
Chapter 3, Problem 21(choose chapter or problem)
In Exercises 21 through 26, find a redundant column vector of the given matrix A, and write it as a linear com- bination of preceding columns. Use this representation to write a nontrivial relation among the columns, and thus find a nonzero vector in the kernel of A. (This procedure is illustrated in Example 8.)
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