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OpenStudy (anonymous):
Construct a 4*4 matrix whose determinant is easy to compute using cofactor expansion but hard to evaluate using elementary row operations.
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OpenStudy (anonymous):
don't know the answere. But u can try out the following link or wait for someone else to answer. http://tutorial.math.lamar.edu/Classes/LinAlg/DeterminantByRowReduction.aspx
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