At what points is the given function continuous?f(x, y) = tan (x + y)
A. All (x, y) ? (0, 0)
B. All (x, y) ? 
C. All (x, y)
D. All (x, y) such that x + y ? 
, where n is an integer
Answer: D
Mathematics
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Find the extreme values of the function and where they occur.y = x3 - 3x2 + 6x - 8
A. The minimum is 4 at x = -1. B. The maximum is 4 at x = 1. C. The maximum is 4 at x = 2. D. None
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Solve the system.
A. 
B. 
C. 
D. 
E. 
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Solve the equation.36y2 = 25
A. - 
, 
B. 
C. 
D. - 
, 
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Find all values x = a where the function is discontinuous.f(x) = 
A. Nowhere B. a = 9, 6 C. a = 6 D. a = -9, 9, 6
Mathematics