Suppose f(x) is such a quadratic expression that it is positive for all real x.
If g(x) = f(x) + f'(x) + f”(x), then for any real x1
g(x) < 0
2
g(x) > 0
3
g(x) = 0
4
g(x) ≥ 0
Suppose f(x) is such a quadratic expression that it is positive for all real x.
If g(x) = f(x) + f'(x) + f”(x), then for any real x