1. For each of the following statements, determine if the conclusion ALWAYS follows from the assumptions, if the conclusion is SOMETIMES true given the assumptions, or if the conclusion is NEVER true given the assumptions. You do not need to show any work or justify your answers to these questions - only your circled answer will be graded. (a) If A and B are matrices and AB = 0 (the zero matrix), then A=0 or B = 0. ALWAYS SOMETIMES (b) If X(t) is a solution to the linear system X'= AX, then et X(t) is also a solution. ALWAYS SOMETIMES NEVER NEVER (c) If a 2 x 2 matrix A has real distinct eigenvalues and det A = 1, then 0 < trace(A) < 2. ALWAYS SOMETIMES NEVER
1. For each of the following statements, determine if the conclusion ALWAYS follows from the assumptions, if the conclusion is SOMETIMES true given the assumptions, or if the conclusion is NEVER true given the assumptions. You do not need to show any work or justify your answers to these questions - only your circled answer will be graded. (a) If A and B are matrices and AB = 0 (the zero matrix), then A=0 or B = 0. ALWAYS SOMETIMES (b) If X(t) is a solution to the linear system X'= AX, then et X(t) is also a solution. ALWAYS SOMETIMES NEVER NEVER (c) If a 2 x 2 matrix A has real distinct eigenvalues and det A = 1, then 0 < trace(A) < 2. ALWAYS SOMETIMES NEVER
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter9: Systems Of Equations And Inequalities
Section9.6: The Algebra Of Matrices
Problem 40E
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