fx = 4 log x - 1 - 2x ^ 2 + 4x + 5

fx = 4 log x - 1 - 2x ^ 2 + 4x + 5

fx = 4 log x - 1 - 2x ^ 2 + 4x + 5. There are any references about fx = 4 log x - 1 - 2x ^ 2 + 4x + 5 in here. you can look below.