Determine if the equation is linear.
- 8 = 0
A. Linear
B. Not linear
Answer: B
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Find all the second order partial derivatives of the given function.f(x, y) = xye-y2
A. 
= ye-y2; 
= 2xye-y2(y2 - 1); 
= 
= e-y2(1 - y2)
B. 
= 0 ; 
= 2xye-y2(2y2 - 3); 
= 
= e-y2(1 - y2)
C. 
= 0; 
= 2xye-y2(2y2 - 3); 
= 
= e-y2(1 - 2y2)
D. 
= ye-y2; 
= 2xye-y2(2y2 - 6); 
= 
= e-y2(1 - 2y2)
Graph the curve whose parametric representation is given. x = 4 + 5 sin t, y = 4 + 5 cos t; 0 ? t ? 2? 
A. 
B. 
C. 
D. 
Solve the problem.The number of milligrams of a certain compound, C, produced in a chemical reaction with temperature at x, in degrees Celsius, can be modeled by the formula C = 0.013x2 - 1.19x + 28.24.According to the formula, at what temperatures is the chemical reaction expected to produce 8 milligrams of the compound? Use a calculator and round answers to the nearest milligram.
A. 68 ° C and 24 ° C B. 70 ° C and 22 ° C C. 68 ° C and 22 ° C D. 69 ° C and 23 ° C
Find the difference.
- 
A. - 
B. 
C. - 
D. - 