共50条信息
点\((a,b)\)是区域\(\begin{cases} a+b-4\leqslant 0, \\ a > 0, \\ b > 0 \end{cases}\)内的任意一点,则使函数\(f(x)=ax^{2}-2bx+3\)在区间\(\left[ \left. \dfrac{1}{2},+∞ \right. \right)\)上是增函数的概率为\((\) \()\)
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