Consider a 3 x 4 matrix A. Its echelon form B is obtained by doing the following row operations:

R1 = 5R1

Find a matrix E so that EA=B.

Which is the correct answer?

Consider a 3 x 4 matrix A. Its echelon form B is obtained by doing the following row operations: R1 = 5R1. Find a matrix E so that EA = B. Which is the correct answer?

This problem involves finding a matrix E that transforms matrix A into its echelon form B by performing the row operation R1 = 5R1. Key concepts include matrix multiplication, elementary row operations, and the elementary matrix theorem. Suitable for undergraduate students studying linear algebra.

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