Use a 3D grapher to graph the function. Then estimate any relative extrema.f(x,y) = x2 + 2y2 - xy2
A. Relative minima = 0, 4
B. Relative maxima = 0, 4
C. No relative extrema
D. Relative minimum = 0, relative maximum = 4
Answer: A
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Find the union.{a, b, c, d, e, f, g, h, i, j } ? { }
A. ? B. {a, b, c, d, e, f, g, h, i, j} C. {a, b, c, d, e} D. {e, f}
Write the satement in symbols. Let x represent the unknown number.The quotient of 72 and the product of a number and -5.
A. 
B. -360x
C. 
D. 
- 5
Write an equation for the parabola.
A. y2 = -8x B. y2 = 8x C. x2 = -8y D. x2 = 8y
Solve the problem.The formula D = 8e-0.04h can be used to find the number of milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. When the number of milligrams reaches 3, the drug is to be given again. What is the time between injections?
A. 27.47 hr B. 51.99 hr C. 27.36 hr D. 24.52 hr