[Solved] 18.06 Exercise 8-solving Ax = b and row reduced form R

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solving Ax = b and row reduced form R

Problem 8.1: (3.4 #13.(a,b,d) Introduction to Linear Algebra: Strang) Explain why these are all false:

  1. The complete solution is any linear combination of xp and xn.
  2. The system Ax = b has at most one particular
  3. If A is invertible there is no solution xn in the

Problem 8.2: (3.4 #28.) Let

U and c .

Use Gauss-Jordan elimination to reduce the matrices [U 0] and [U c] to [R 0] and [R d]. Solve Rx = 0 and Rx = d.

Check your work by plugging your values into the equations Ux = 0 and Ux = c.

Problem 8.3: (3.4 #36.) Suppose Ax = b and Cx = b have the same (complete) solutions for every b. Is it true that A = C?

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[Solved] 18.06 Exercise 8-solving Ax = b and row reduced form R
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