共50条信息
已知\(a > 0\),\(b > 0\),\(c > 0\),且\(a^{2}+b^{2}+c^{2}=4\),则\(ab+bc+ac\)的最大值为\((\) \()\)
\(\sqrt{({3}-a)(a+{6})}(-{6}\leqslant a\leqslant {3})\)的最大值为 \((\) \()\)
设\(0 < x < 1\),函数\(y=\dfrac{4}{x}+\dfrac{1}{1-x}\)的最小值为\((\) \()\)
函数\(y={\log }_{a}\left(x+3\right)-1\left(a > 0且a\neq 1\right) \)的图象恒过定点\(A\),若点\(A\)在直线\(mx+ny+1=0\)上,其中\(mn > 0\),则\(\dfrac{1}{m}+\dfrac{1}{n}\)的最小值为\((\) \()\)
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