Use even and odd properties of the trigonometric functions to find the exact value of the expression.sin 
A. - 
B. 
C. - 
D. 
Answer: A
Mathematics
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Find the gradient field F of the function f.f(x, y, z) = x6y7 + 
A. F = 6x5y7i + 7x6y6j - 
k
B. F = (6x5 + 6x5)i + 7y6j + 
k
C. F = (6x5 + 6x5)i + 7y6j - 
k
D. F = 
i + 7x6y6j - 
k
Mathematics
Graph the quadratic equation on [-10, 10] by [-10, 10]. Does this window give a complete graph?f(x) = -4x2 + 2x - 1
A. 
No
B. 
Yes
C. 
Yes
D. 
No
Mathematics
Which of the following IS NOT a potential barrier to entry?
A. Economies of scale B. Agency costs C. Switching costs D. Capital requirements
Mathematics
Solve.For the geometric sequence 2, 1, 
, 
, ... , find an.
A. an = 2n-2
B. an = 
n-2
C. an = 
1-n
D. an = 21-n
Mathematics