Find the derivative of the function.y = cos (8x2 + 5)
A. 
= -16 sin 8x2
B. 
= sin (8x2 + 5)
C. 
= -16x sin (8x2 + 5)
D. 
= 16x sin (8x2 + 5)
Answer: C
Mathematics
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A. (5.39, 0.81) B. (3.22, 0.81) C. (5.39, 1.19) D. (3.22, 2.19)
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The graph of a function f is given. Use the graph to answer the question.How often does the line y = 20 intersect the graph?
A. three times B. once C. does not intersect D. twice
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Rationalize the denominator. 
A. 8z
B. 
C. 
D. 297
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