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共找到 3717 与by= 相关的结果，耗时3 ms
设点A(1,0)B(2,1)如果直线ax+
by=
1与线段AB有一个公共点,那么a^2+b^2的最值直线ax+
by=
1与线段AB有一个公共点,则点A(1,0)B(2,1)应分布在直线ax+by-1=0两侧,将(1,0)与(2,1)代入,则(a-1)(2a+b-1)≤0,
数学
以a为横轴,b为纵轴画出区域
为什么ax+by+c+A(mx+ny+p)表示过直线ax+by+c=0与mx+ny+p=0交点的所有直线?我知道可以验证,请解释如何证明,感激不尽.表示过直线ax+by+c=0与mx+ny+p=0交点且不包括mx+ny+p=0的所有直线为什么不包括后一条
数学
Meet you by surprise 这句话对不是by surprise 还是by surprised
其他
有by school bus 的说法么?I usually come to school ______ school bus,but today I came to school______ a taxi.A.on,in B.on,on C.by,in D.by,on
英语
纠结的是第一个空。第二个空我
英语高手来by+时间点用法he was a millionaire by the time he was thirty .BY不是应该加表时间的短语再加过完吗.这句矛盾了.我觉得应该用when
英语
BY有没有写的意思我们班上有个童鞋写完一个东西后,就像这样：XXXXXXXXXXXXXX——BY.所以我提问,如果不是,一楼的的那不是喔补充：那位童鞋写BY的后面有她的名字
语文
In 1620,about half the USA was covered by forests.此句子对吗?将by换成with行吗?我看到别处有用with的.可是be covered with 与be covered by不能通用,有点晕.
英语
My mother bought me a book.改为被动语态是 I was bought a book by my mother.正确吗I was bought a book by my mother。和 A book was bought to me by m
英语
mother.这两种是不是
关于语法问题,新概念三册第一课puma at largefor the description given by people who claimed to have seen the puma were extraordinrily similar.请问这里的giv
英语
n by people gi
They built a new school in the village.被动语态A new school in the village was built by them A new school was built by them in the village
英语
A new school w
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