Question 20
FunctionsIf h(x) = x3 − 1/x3 evaluate h(a) − h(1/a)
- A.1/a3
- B.0
- C.2a3 − 2/a3
- D.2/a3 − 2a3
Show the answer and explanation
Answer: C (2a3 − 2/a3)
Explanation
h(a) = a3 − 1/a3 and h(1/a) = 1/a3 − a3. Subtracting gives 2a3 − 2/a3.
If h(x) = x3 − 1/x3 evaluate h(a) − h(1/a)
Answer: C (2a3 − 2/a3)
h(a) = a3 − 1/a3 and h(1/a) = 1/a3 − a3. Subtracting gives 2a3 − 2/a3.