Sketch the graph of the given equation over the interval [-2?, 2?].y = 
cos 
A. 
B. 
C. 
D. 
Answer: B
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Find the gradient field F of the function f.f(x, y, z) = 
7
A. F = 
i + 
j - 7
k
B. F = 7
6i + 
j - 7
k
C. F = 7
6i + 
j + 7
k
D. F = 7
6i + 
j + 7
k
Insert the symbol < or > between the pair of numbers.- 
___ - 
A. < B. >
Solve the problem.Mr. and Mrs. Gutierrez borrow $8500 to buy a new car. The loan is to be paid off in 34 monthly payments. How much is each payment?
A. $250 B. $25 C. $8466 D. $8534
Rewrite the complex number in standard polar form, plot the number in the complex plane, and determine the quadrant in which the point lies or the axis on which the point lies.z = 2(cos 150° + i sin 150°)
A. z = 2(cos 210° + i sin 210°); Quadrant III
B. z = 2(cos 60° + i sin 60°); Quadrant I
C. z = (cos 150° + i sin 150°); Quadrant I
D. z = 2(cos 150° + i sin 150°); Quadrant II