Question 18
DifferentiationEvaluate limx→3 ((x2 − 2x − 3)/(x − 3))
- A.4
- B.3
- C.2
- D.0
Show the answer and explanation
Answer: A (4)
Explanation
x² − 2x − 3 = (x − 3)(x + 1). Cancel (x − 3) to get x + 1, which is 4 at x = 3.
Evaluate limx→3 ((x2 − 2x − 3)/(x − 3))
Answer: A (4)
x² − 2x − 3 = (x − 3)(x + 1). Cancel (x − 3) to get x + 1, which is 4 at x = 3.