Decide whether or not the matrix is a probability vector. 
A. Yes
B. No
Answer: A
Mathematics
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Solve the problem.Find the tangent line(s) at the pole for the curve 
A. ? = 0 (y = 0), ? = 
(y = x), ? = 
(x = 0), ? = 
(y = -x)
B. ? = 
[y = 
x], ? = 
[y = - 
x]
C. ? = 0 (y = 0), ? = 
(x = 0)
D. ? = 
(y = x), ? = 
(y = -x)
Mathematics
Determine the amplitude and find the phase shift in radians (to the nearest tenth).y = -3 sin x - 7 cos x
A. 116, 0.4
B. 
, 0.4
C. 116, -0.4
D. 
, -0.4
Mathematics
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.
-1
A. 
B. 
C. 
D. 
Mathematics
Find the requested value of the second derivative of the function.f(x) = 
; Find f"(2).
A. 
B. 0
C. - 
D. 
Mathematics