共50条信息
已知动点\(P(x,y)\)满足方程\(3{{x}^{2}}+4{{y}^{2}}-12=0\),则\(P(x,y)\)到直线\(x+y-6=0\)的距离的取值范围_________________________\(.\)
已知\(3x-4y+2=0\),则\(\sqrt{{{\left( x+1 \right)}^{2}}+{{\left( y-3 \right)}^{2}}}\)的最小值为________.
已知两条平行直线\(3x+2y-6=0\)与\(6x+4y-3=0\),则这两条平行线间的距离为\(\_\) .
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