Find all the first order partial derivatives for the following function.f(x, y) = ln yx
A. 
= ln y; 
= - xln y
B. 
= xln y; 
= - 
C. 
= ln y; 
= 
D. 
= 0; 
= - 
Answer: C
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A. Estimate: 6; Actual: 5.122 B. Estimate: 6; Actual: 5.112 C. Estimate: 5; Actual: 5.212 D. Estimate: 5; Actual: 5.112
Match the polynomial function with the graph.y = -2x3 - 4x2 + 24x + 15
A. 
B. 
C. 
D. 
Solve the problem.The temperature (in degrees Fahrenheit) of a dead body that has been cooling in a room set at 70° is measured as 88°. One hour later, the body temperature is 87.5°. How long (to the nearest hour) before the first measurement was the time of death, assuming that the body temperature of the deceased at the time of death was 98.6°. Assume the cooling follows Newton's Law of Cooling: U = T + (Uo - T)ekt.
What will be an ideal response?
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A. 0.01 B. 1 C. 0.1 D. -0.01