Three unit circles are arranged so that each touches the other two .Find the radii of the two ci...
题目
Three unit circles are arranged so that each touches the other two .Find the radii of the two ci...
Three unit circles are arranged so that each touches the other two .Find the radii of the two circles which touch all three.
答案
Problem Three unit circles are arranged so that each touches the other two.Find the radii of the two circles which touch all three.SolutionThe two circles have center at the center of the triangle,whi...
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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