Let a be the 4 x 4 matrix (20.3) considered in this lecture and the previous one. (a) determine det a from (20.5). (b) determine det a from (21.3). (c) describe how gaussian elimination with partial pivoting can be used to find the determinant of a general square matrix.

this is a very good question

step-by-step explanation:

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total of apples - take away four

6-4 = 2

answer is 2 apples

what’s the question?

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