共50条信息
已知直线\(\dfrac{x}{a}+\dfrac{y}{b}=1\)与圆\(x\)\({\,\!}^{2}+\)\(y\)\({\,\!}^{2}=1\)相切,则点\((\)\(a\),\(b\)\()\)到原点距离的最小值为________.
设双曲线\(\dfrac{{{x}^{2}}}{{{a}^{2}}}-\dfrac{{{y}^{2}}}{{{b}^{2}}}=1(\)\(a\)\( > 0\),\(b\)\( > 0)\)的半焦距为\(c\),原点到直线\(l\):\(ax\)\(+\)\(by\)\(=\)\(ab\)的距离等于\(\dfrac{1}{3}c+1\),则\(c\)的最小值为________.
进入组卷