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11 Nov 2019
114 Chapter 2 Determinants In Exercises 89-93, solve by Cramer's rule, where it applies. 90 3x1 +5x2 89. 5x1 3122 4x12-5 6x1 + 2x2 + 4x3 10 9 2x1 x2 XI - 3x3 1 90 -x1 7x2 2x32 2x1 6x2 2x3-3 94. Show that the matrix 0 A 10 cos θ -sin θ 0 sin cos is invertible for all values of e; then find A-1 using Theorem 2.3.6 100 95. Use Cramer's rule to solve for x and y' in terms of x and y. 96. Use Cramer's rule to solve for x and y' in terms of x and y. 101
114 Chapter 2 Determinants In Exercises 89-93, solve by Cramer's rule, where it applies. 90 3x1 +5x2 89. 5x1 3122 4x12-5 6x1 + 2x2 + 4x3 10 9 2x1 x2 XI - 3x3 1 90 -x1 7x2 2x32 2x1 6x2 2x3-3 94. Show that the matrix 0 A 10 cos θ -sin θ 0 sin cos is invertible for all values of e; then find A-1 using Theorem 2.3.6 100 95. Use Cramer's rule to solve for x and y' in terms of x and y. 96. Use Cramer's rule to solve for x and y' in terms of x and y. 101
Nelly StrackeLv2
17 Jun 2019