a festival in your country的翻译
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/03 05:31:35
a festival in your country的翻译
a festival in your country的翻译
a festival in your country的翻译
你们国家的一个节日
设A(x1,y1),B(x2,y2)
x1²-y1²=1..........1
x2²-y2²=1............2
(x1 x2)/2=2 =>x1 x2=4
(y1 y2)/2=1 =>y1 y2=2
1-2=(x1 x2)(x1-x2)-(y1 y2)(y1 y2...
全部展开
设A(x1,y1),B(x2,y2)
x1²-y1²=1..........1
x2²-y2²=1............2
(x1 x2)/2=2 =>x1 x2=4
(y1 y2)/2=1 =>y1 y2=2
1-2=(x1 x2)(x1-x2)-(y1 y2)(y1 y2)=0
4(x1-x2)-2(y1-y2)=0
直线AB的斜率K=(y1-y2)/(x1-x2)=2
所以直线AB的方程为:y-1=2(x-2)
y=2x-3
可以验算一下,
x²-(2x-3)²=1
-3x² 12x-10=0
x1 x2=12/3=4, (x1 x2)/2=2,正确
收起
你们国家的一个节日
a festival in your country的翻译
Spring Festival is ______ important festival in ChinaA.a B.an C.the
every,music,there,in,year,school,a,festival,is,your连词成句
--------,we don't clean our house for a few days.A.During the Spring Festival B.During Spring Festival C.In the Spring Festival D.In Spring Festival 要原因
Spring Festival is (a,the) most important festival in China.
the spring festival is a t() festival in our country
l know a lot about ___ in China?A holiday B festival C holiday
You forget ____ l in the word festival.A.a B.an C.the D./
We have ( ) Art Festival each year.A.a B.in C.the 急用.请说明原因.
Thanksgiving is a festival in late a().
Most of people China like the Spring Festival very much.A.in B.on C.to
选择:Everyone in China ___Spring Festival.A.likes B.like C.liking
Today is the Dragon Boat Festival ( ) China.A.feom B.of C.in
The Art Festival is ___ November this year. A. at B. on C. in D. from
Everybody____China likes Spring Festival very much.A.in B.on C.to
christmas ________goes Spring Festival every A after B before C behind D in front of
every,music,there,in,year,school,a,festival,is,your如何连词成句?给出的符号是句号?
Which is your favorite festival in the year?翻译