MATH 0280 Midterm: MATH 280 practiceCh4ans-148
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Due date: wednesday, september 26th, at the beginning of the lecture. Instructions: please write your work on a separate paper, and attach this page with your name to the top. Please keep the copy of your work for yourself so that you can check your answers. Give your explanation in terms of ranks: without solving the system, determine the number of the free variables. Give your explanation in terms of ranks: find the reduced row echelon form of the augmented matrix, solve the system. White down your answer in a vector form.
