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- $ F(x) = {x^2} - 3\\\sin x + 6 + \\\frac{{{\\\pi ^2}}}{4}.$
- $ F(x) = {x^2} - 3\\\sin x + 6 - \\\frac{{{\\\pi ^2}}}{4}.$
- $ F(x) = {x^2} - 3\\\sin x + \\\frac{{{\\\pi ^2}}}{4}.$
- $ F(x) = {x^2} + 3\\\sin x + 6 + \\\frac{{{\\\pi ^2}}}{4}.$