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In Exercises 21–38, solve each system of equations using matrices. Use Gaussian elimination with back-substitution or Gauss-Jordan elimination.
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COLLEGE ALGEBRA
- In Exercises 5–8, use the definition of to write the matrix equation as a vector equation, or vice versa.arrow_forwardUse Cramer’s rule to compute the solutions of the systems in Exercises 1–6.arrow_forwardFind the general solutions of the systems whose augmented matrices are given in Exercises 7–14.arrow_forward
- In Exercises 29–32, find the elementary row operation that trans- forms the first matrix into the second, and then find the reverse row operation that transforms the second matrix into the first.arrow_forwardFind the inverses of the matrices in Exercises 1–4.arrow_forwardIn Exercises 1–4, determine if the system has a nontrivial solution. Try to use as few row operations as possible.arrow_forward
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