1. (3 points) Express the following vector equation as a system of linear equations. 4 X1 + X2 = = [ 3 5 (Keep the equations in order.) -Xi+ X2 = _ x1 + X2 = Answer(s) submitted: (incorrect) 2. (1 point) Determine which of the points (1, -2, -2), (-7,3,3), and (6,1,-5) lie in the plane x1 - 4x2 +6x3 = -1. Answer: Answer(s) submitted: (incorrect)
1. (3 points) Express the following vector equation as a system of linear equations. 4 X1 + X2 = = [ 3 5 (Keep the equations in order.) -Xi+ X2 = _ x1 + X2 = Answer(s) submitted: (incorrect) 2. (1 point) Determine which of the points (1, -2, -2), (-7,3,3), and (6,1,-5) lie in the plane x1 - 4x2 +6x3 = -1. Answer: Answer(s) submitted: (incorrect)
4. (1 point) If Aū= 4 3 2 and Av= -3 -2 then A(3ū+ 2v) = Answer(s) submitted: (incorrect)
I need answer to 8 4. (1 point) If Aū= 4 3 2 and Av= -3 -2 then A(3ū+ 2v) = Answer(s) submitted: (incorrect) 8. (3 points) (a) Perform the indicated row operations on the matrix A successively in the order they are given until a matrix Generated by WebWork hwehwork maa ore Mathematical Association of America Previous Problem Problem List Next Problem (3 points) (a) Perform the indicated row operations on the matrix A successively in the order they...
it's all nr 7, pls help 4. (1 point) If Aū= 4 3 2 and Av= -3 -2 then A(3ū+ 2v) = Answer(s) submitted: (incorrect) . Choose • Echelon Form • Reduced Echelon Form • Not in Echelon Form 1 0 0 -5 (3) 0 1 0 9 0 0 1-9 . Choose • Echelon Form • Reduced Echelon Form . Not in Echelon Form 1 0 -7 0 0 0 0 0 0 1 0 -4 0 0 1...
1. (1 point) Find two vectors vi and v2 whose sum is (-3,0), where Vi is parallel to(-2,-4) while v2 is perpendicular to-2,-4) and Answer(s) submitted: (incorrect) 2. (1 point) Find the angle θ between the vectors a- 10i -j- 5k and b 2i+j- 21k Answer (in radians): θ Answer(s) submitted: (incorrect) 3. (1 point) Find a vector a that has the same direction as -6,5,6) but has length 3. Answer: a Answer(s) submitted: (incorrect) 4. (1 point) Suppose we...
just problem number 4 please! thank you! There are ten problems totaling 10 points. Show all your work! 1-4 For each system below, (a) solve the initial v stability of the critical point at (0,0) 1. alue problem, and (b) determine the type and x' =-4x1 + 5x2 X2,--5x1 + 4x2 x1(0) -16, x2(0) 25. x'= 6x1 + x2 x1(0) 6, X2(0) = 4 2. xi(12345e) 55, X2(12345e)--729 3 xi-43x Xi(-101) = 9, x2(-101) 5 4 x' = 2x1-x2 x2,=...
Linear Algebra 1) For each of the following linear systems of equations I. 2x, x 3 x,-4x2 = 4 3x, +2x-5 2x, + 3x2-6x3 x 3x2 + 2x 2 -x,-4x2 + 6x3 =-1 III. 5x1 + 7x2=-5 8x1-5x2 = 3 IV, 2 a. Identify corresponding linear algebra nomenclature (4x -b) b. Calculate the inverse of the coefficient matrix (4) for each system Calculate each by hand and check your results with an alternate hand calculation or alternatively through an suitable...
(1 point) Convert the augmented matrix 3 31 2 2 1 3 -5 0 to the equivalent linear system. Use x1 and x2 to enter the variables xi and r2 -2x1+3x2 -3 -9 x2 x2 C (1 point) Convert the augmented matrix 3 31 2 2 1 3 -5 0 to the equivalent linear system. Use x1 and x2 to enter the variables xi and r2 -2x1+3x2 -3 -9 x2 x2 C
1 [3]. Let X1,X2, X3 be iid random variables with the common mean --1 2-4 and variance σ Find (a) E (2X1 - 3X2 + 4X3); (b) Var(2X1 -4X2); (c) Cov(Xi - X2, X1 +2X2).