A. (1, 2)
B. [1,2]
C. (1, 2) U (3, ∞)
D. [1, 2] U [3, ∞)
The domain of f(x)= log10(√x-4 +√6-x) is
The domain of √1-3x+Cos-1 3x-1/2 is
f={(1, 4), (2,-2), (3,10)} then f/2=