Determine if the following is a function or not. f(x) = 1 for x ? {0, 2, 4, 6, ...} and f(x) = 0 for x ? {1, 3, 5, 7, . . .}
A. Yes
B. No
Answer: A
Mathematics
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Find the exact value of the expression.cos (165°) cos (45°) + sin (165°) sin (45°)
A. -2
B. - 
C. - 
D. - 
Mathematics
Provide an appropriate response.For the function y = cot (5x + ?), determine the interval of the principal cycle and the equations of the vertical asymptotes of the principal cycle.
A. 0 < x < 
; x = 
B. 0 < x < 
; x = 0, x = 
C. - 
< x < 0; x = - 
D. - 
< x < 0; x = - 
, x = 0
Mathematics
Subtract.
A. 45 B. 25 C. 143 D. 17
Mathematics
Perform the indicated operations.(-2x3 - 5x2) - (-6x3 + 9x2 - 7)
A. -8x3 + 4x2 + 7 B. 4x3 - 14x2 - 7 C. -8x3 + 4x2 - 7 D. 4x3 - 14x2 + 7
Mathematics