Find all solutions of the equation in the interval [0, 2?).cot2 = 3
A. 
B. 
C. 
D. 
Answer: C
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Find all the second order partial derivatives of the given function.f(x, y) = x ln (y - x)
A. 
= 
; 
= - 
; 
= 
= 
B. 
= 
; 
= 
; 
= 
= 
C. 
= 
; 
= - 
; 
= 
= - 
D. 
= 
; 
= - 
; 
= 
= 
Solve the problem.Sam is a sales representative whose territory consists of eleven major cities in the midwest. He wants to visit customers in each of the cities, and he wants to minimize travel cost. Sam uses the cheapest-link algorithm to find a cheapest-link tour with a total cost of $1894. Suppose that he later finds out the cost of an optimal tour is $1760. What was the relative error of the cheapest-link tour? Express your answer as a percentage, rounded to the nearest tenth of a percent.
A. 7.6% B. 7.1% C. 15.2% D. 13.3% E. 3.8%
Find the standard form of the equation for the ellipse satisfying the given conditions. Foci at (0, ±2); vertex (0, -5)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Divide.-0.9 ÷ (-0.2)
A. -4.4 B. -4.5 C. 0.18 D. 4.5