Determine the x values that cause the function to be (a) zero, (b) undefined, (c) positive, and (d) negative.f(x) = 
A. (a) ?, (b) (-?, 3), (c) ?, (d) (3, ?)
B. (a) 
, (b) {-1, 3} , (c) 
? 
, (d) (-?, -1) ? 
C. (a) 
, (b) {-1, 3} , (c) (-?, -1) ? 
, (d) 
? 
D. (a) ?, (b) (-?, 3), (c) (3, ?), (d) ?
Answer: D
Mathematics
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