get into trouble一道数学题目额若a²(b-c)+b²(c-a)+c²(a-b)=0,求证:a、b、c三个数中至少有两个数相等
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/30 16:26:53
![get into trouble一道数学题目额若a²(b-c)+b²(c-a)+c²(a-b)=0,求证:a、b、c三个数中至少有两个数相等](/uploads/image/z/11977317-45-7.jpg?t=get+into+trouble%E4%B8%80%E9%81%93%E6%95%B0%E5%AD%A6%E9%A2%98%E7%9B%AE%E9%A2%9D%E8%8B%A5a%26sup2%3B%EF%BC%88b-c%EF%BC%89%2Bb%26sup2%3B%EF%BC%88c-a%EF%BC%89%2Bc%26sup2%3B%EF%BC%88a-b%EF%BC%89%3D0%2C%E6%B1%82%E8%AF%81%EF%BC%9Aa%E3%80%81b%E3%80%81c%E4%B8%89%E4%B8%AA%E6%95%B0%E4%B8%AD%E8%87%B3%E5%B0%91%E6%9C%89%E4%B8%A4%E4%B8%AA%E6%95%B0%E7%9B%B8%E7%AD%89)
x͒J@_+Ihf.sEiC7&d"B)օ[qaMs]&%^
a2f覱߳Z}kв1.bwlMMhlk a0Ю>v^0ȏ_Yzf0<K|imU:KIj%]T6d*]@Aamؒ xnʻ
$Cv%N˪Qcrh-dRώ挂5f~Sow(>
get into trouble一道数学题目额若a²(b-c)+b²(c-a)+c²(a-b)=0,求证:a、b、c三个数中至少有两个数相等
get into trouble一道数学题目额
若a²(b-c)+b²(c-a)+c²(a-b)=0,求证:a、b、c三个数中至少有两个数相等
get into trouble一道数学题目额若a²(b-c)+b²(c-a)+c²(a-b)=0,求证:a、b、c三个数中至少有两个数相等
a²(b-c)+b²(c-a)+c²(a-b)
=(a²b-b²a)-(a²c-b²c)+c²(a-b)
=ab(a-b)-c(a-b)(a+b)+c²(a-b)
=(a-b)(ab-c(a+b)+c²)
=(a-b)(ab-ac-bc+c²)
=(a-b)(a(b-c)-c(b-c))
=(a-b)(b-c)(a-c)=0
则三个括号至少有一个是0
所以a=b,b=c,c=a至少有一个成立
所以a、b、c三个数中至少有两个数相等
get into trouble=?
Get us into trouble
get into trouble是什么意思?
Get into trouble=?
get into trouble (with)的同义短语
sb get into trouble with sb
get into trouble with的近义词是什么?
get into trouble,表示陷入困境,
i often get into trouble with
某某 get 某某 into trouble的意思
用be in trouble with 和 get ...into trouble 造句
有没有get trouble的说法?be in trouble,get in trouble,get into trouble具体区别加造句!
get into trouble中间能不能加名词比如:this mistake may get her into trouble
get into trouble一道数学题目额若a²(b-c)+b²(c-a)+c²(a-b)=0,求证:a、b、c三个数中至少有两个数相等
get sb in to trouble、get sb into trouble 哪个对?
get sb. in to trouble还是get sb. into trouble指某人陷入困难?
get into trouble 后面怎么+动词,请造句.
get into trouble 的用法最好有例句