Use the half-angle formulas to evaluate the given function.cos 112.5°
A. 0.9239
B. -0.7071
C. 0.5556
D. -0.3827
Answer: D
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Describe the level surfaces for the given function.f(x, y, z) = (7x2 - 8y2 - 6z2)3/2
A. Hyperboloids of two sheets B. Ellipsoids C. Hyperboloids of one sheet D. Paraboloids
In order to answer the given question, which of the following types of study would be the most appropriate: an experiment without blinding, an experiment with single blinding, an experiment with double blinding, an observational study, or a case-control study?Does caffeine cause birth defects?
A. Experiment without blinding B. Experiment with single blinding C. Case-control study D. Experiment with double blinding E. Observational study
Calculate the derivative of the function. Then find the value of the derivative as specified.g(x) = 3x2 - 4x; g '(3)
A. g '(x) = 6x - 4; g '(3) = 14 B. g '(x) = 6x; g '(3) = 18 C. g '(x) = 3x - 4; g '(3) = 5 D. g '(x) = 2x- 4; g '(3) = 2
Find the derivative of the function.y = log (8x)
A. 
B. 
C. 
D. 