Find the vertical asymptotes of the rational function.f(x) = 
A. x = 
, x = -1
B. x = - 
, x = 1
C. x = - 
, x = 1
D. x = 
, x = -1
Answer: A
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Find all the second order partial derivatives of the given function.f(x, y) = cos (xy2)
A. 
= y2 sin xy2; 
= 2[2y2 cos (xy2) - sin (xy2)] ; 
= 
= 2y[y2 cos (xy2) - sin (xy2)]
B. 
= -y4 cos xy2; 
= - 2x[2xy2 cos (xy2) + sin(xy2)]; 
= 
=
- 2y[xy2 cos (xy2) + sin(xy2)];
C. 
= - y2 sin xy2; 
= 2y
; 
= 
= 2
D. 
= - y2 sin xy2; 
= 2[ sin (xy2)- 2y2 cos (xy2)] ; 
= 
= 2y [sin (xy2)-y2 cos (xy2)]
Use substitution to solve the system, with coordinates of solutions rounded to the second decimal place. Verify your work by using "intersect" on a graphing calculator.y = -3.43x - 7.19y = 2.89x - 1.05
A. (-0.97, 3.86) B. (-3.86, 0.97) C. (-0.97, -3.86) D. (-3.86, -0.97)
Simplify.
A. 
B. 
C. 
D. 
Solve. Remember to insert units when writing your answer.A photographer wishes to enlarge a portion of a photograph. The length of the desired portion is 1.1 times the desired portion's width. If the enlargement is to be 9.7 cm wide, what will its length be?
A. 106.7 cm B. 10.67 cm C. 1.067 cm D. 1067 cm