Concept explainers
In Exercises
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Introduction to Linear Algebra (Classic Version) (5th Edition) (Pearson Modern Classics for Advanced Mathematics Series)
- Q6: Determine whether AB is parallel or perpendicular to CD where: a) A(0,-1); B(1,1) ; C(1,5) b) A(1,1): B (3.2) C(-1.1) ; D-1,1) D(0.-1) c) A(3.3): B(-3,1): C(-1.-1): DI-7)arrow_forwardLet u1 = (4, -2, 1), u2 = (6,3,2) , u3 = (-2,-1,3) find the linear combination v= u1 - 3u2+ 4u3arrow_forwardLet V₁ = 6 , V₂ = 1 -3 -1 0 combination of V₁, V₂ and V3. , V3 = 2 5 -5 , V4 = -26 -9 -1 -3 Express V4 as a lineararrow_forward
- In Exercises 19 and 20, draw the coordinate axes relative to u and v and locate w. 19. u = 20. u = 1₁ - B₂ V= -1 W = 2u + 3v [-2] - = [-2] V 1 W -u - 2v 4- 5arrow_forwardA company’s profit increased linearly from $6million at the end of year 1 to $14 million at the end of year 3. a)Use the two (year,profit) data points (1,6) and (3, 14) to find the linear relationship y= mx+b between x= year and y=profit. b)Find the company’s profit at the end of 2 years. c)Predict the company’s profit at the end of 5 years.arrow_forwardIn Exercises 47-50, write v as a linear combination of u,, u, if possible. and 47. u, = (2, 3, 5), u2 = (1, 2, 4), uz = (-2, 2, 3), v = (10, 1, 4) 48. u, = (1, 3, 5), u2 = (2, – 1, 3), u, = (-3, 2, –4), v = (-1,7, 2) 49. u, = (1, 1, 2, 2), u2 = (2, 3, 5, 6), uz = (-3, 1, -4, 2), v = (0, 5, 3, 0) 50. u, = (1, 3, 2, 1), u2 = (2, - 2, – 5, 4), uz = (2, – 1, 3, 6), v = (2, 5, -4, 0) %3D %3D %3D %3D %3Darrow_forward
- Figure 2.7 In Exercises 48 and 49, determine whether the lines x = p + su and x = q + tv intersect and, if they do, find their point of intersection. 48. p = 2,q=2 u= V= -1 1arrow_forwardLet L, be the line passing through the points Q₁-(-1,-3, 1) and Q2-(-4, -6, 2). Find a value of k so the line L2 passing through the point P₁-P₁(-14, 12, k) with direction vector -[-2, 6, -5] intersects with L₁- k = 0arrow_forward
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:CengageAlgebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal Littell