JAMB Mathematics 1980 Question 43

Question 43

Algebraic Expressions

If a function is defined by f(x + 1) = 3x2 − x + 4 find f(0)

  1. A.4
  2. B.6
  3. C.0
  4. D.8
  5. E.2.
Show the answer and explanation

Answer: D (8)

Explanation

f(0) means x + 1 = 0, i.e. x = −1: 3(1) + 1 + 4 = 8.