Let f(x) be a quadratic expression, which is positive for all real x. – InterviewSolution

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1.	Let f(x) be a quadratic expression, which is positive for all real x. Let f(x)=ax^2+bx+c,f'(x)=2ax+b, f''(x)=2a, where f'(x) and f"(x) are the first and second derivatives of f(x), respectively. If g(x)=f(x)+f'(x)+f''(x), then for every real x
Answer» `g(X)gt0` `g(x)LT0` `g(x)GE0` `g(x)le0` Answer :A

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