2. The n-by-n linear system Ar = b has infinitely many solutions. Which of the following statements is an implication? (a) The matrix A is nonsingular. (b) The homogeneous linear system Ar 0 has a non-trivial solution. (c) RREF(A) has exactly n pivots. (d) a = A-b.

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Chapter2: Second-order Linear Odes
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The n-by-n linear system Ax=b has infinitely many solutions. Which of the following statements is an implication?

2. The n-by-n linear system Ax = b has infinitely many solutions. Which of the following statements
is an implication?
(a) The matrix A is nonsingular.
(b) The homogeneous linear system Ar = 0 has a non-trivial solution.
(c) RREF(A) has exactly n pivots.
(d) x = A-b.
Transcribed Image Text:2. The n-by-n linear system Ax = b has infinitely many solutions. Which of the following statements is an implication? (a) The matrix A is nonsingular. (b) The homogeneous linear system Ar = 0 has a non-trivial solution. (c) RREF(A) has exactly n pivots. (d) x = A-b.
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