Question 12
PolynomialsFind the constant q such that f(x) = 2x3 + qx + 2 and f(−1) = 2
- A.−6
- B.−2
- C.2
- D.6
Show the answer and explanation
Answer: B (−2)
Explanation
f(−1) = 2(−1) − q + 2 = −q. Setting −q = 2 gives q = −2.
Find the constant q such that f(x) = 2x3 + qx + 2 and f(−1) = 2
Answer: B (−2)
f(−1) = 2(−1) − q + 2 = −q. Setting −q = 2 gives q = −2.