MA 113 Midterm: MA 113 UKY Test 1 Fall 06 sol

QUESTION 8 Given the vectors u nd v, find the cross product and determine whether it is orthogonal to both u and v. u=(0,7,2), vs(0,0,2 (-14, 0, -4) (14, 0. 0) (-14, o, o) Not orthogonal Not orthogonal Orthogonal Not othogonal Orthogonal 2. O4 (-14, 0. 0) -14, 0,-4) QUESTION9 Cliek Save and Submit to save and submir

Which of the following is the characteristic polynomial of (0 0 0 0 -6 -1 0 0 1 -1 -2 7 5 3 -2 0)? a) lambda^4 + lambda^3 + 12lambda^2 - 14lambda b) lambda^4 + 3 lambda^3 - 12 lambda^2 - 14 lambda c) lambda^4 + 3 lambda^3 + 16 lambda^2 + 14 lambda d) lambda^4 - lambda^3 + 12 lambda^2 + 14 lambda

Identify the symmetries of the curve r = 7 + 7 cos θ. Then sketch the curve. Is the curve symmetric about the x-axis? ○No O Yes Is the curve symmetric about the y-axis? O No O Yes Is the curve symmetric about the origin? O No O Yes Identify the sketch that shows the curve r-7+7 cos 0. ○ A. O B. OC. O D. 14 14 Click to select your answer

Identify the sketch that shows the curve r= 7 + 7 cos 0. OA. OB. O C. OD. 14- 14- 14 14 14 14 -14 14 14