MA 15900 Midterm: Exam 3 Spring 2012 Solutions

5. -/7 points LarCalc11 5.3.042.MI. 015 Submissions Used Consider the function f(x)-x2 -25,x 2 5 (a) Find the inverse function of f f-1(x) = (b) Graph fand fon the same set of coordinate axes 10 10 4 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 10 10 8 1 2 3 4 5 67 8 9 10 11 1 2 3 5 67 8 9 10 11

(1 point) Which of the following sets of vectors are linearly independent? A. 3, 1, -1, -2), 1, -9, -8, -4) B. 1, 8, 0), (-6, -9, 2), 3, 4, -7 C. 8, 6, 9), -4, -8, 3), -4, 2, -12 D. 8, 6, 9), -4, -8, 3), (-4, 12, 2 (8, 11, --4)) E. 1, -9), (4, 1 F. 4, -3, 0), 9, -7, 0), 5, 2,0 G. (-5, 1, -2), 1, 7, -6) H. (0,0))

ALGEBRA 1 Exam 12 Describe and correct the error -+-= r x+3 LCD =x(x + 3)(x + 1) 3x+3x+D+6(x+1)-8 3 x+1 +4r+3)+6x+6x-8 3x+12x+9+6x +6x- 8 9x+18x +1-0 -18 ±1182-4(9)(1) 2(9) 08시288-18 ± 1242 18 18 12 -+12.-7+12 r+4 31-4 4Xr-3) r+4 (r+2r+4) (r-3Xr-4) (r+2Xr+4) r+2 80