# One is "some others"

Calculus Level 3

Let $$f(x)$$ be a quadratic equation which is positive for all real $$x$$ if $$g(x) = f(x) + f'(x) + f''(x)$$, then for all real $$x$$, $$g(x)$$ is?

Clarification: $$f'(x)$$ is the derivative of $$f(x)$$ and $$f''(x)$$ is the derivative of $$f'(x)$$.

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