若丨x-y+3丨與丨x-y-1999丨互為相反數(shù)
丨x-y+3丨=0
丨x-y-1999丨=0
x-y+3=0
x-y-1999=0
x=998
y=1001
x+y/x-y=(1001+998)/(1001-998)=1999/3
若丨x-y+3丨與丨x-y-1999丨互為相反數(shù),求x+y/x-y的值
若丨x-y+3丨與丨x-y-1999丨互為相反數(shù),求x+y/x-y的值
數(shù)學(xué)人氣：279 ℃時(shí)間：2020-10-02 02:17:03
優(yōu)質(zhì)解答
我來回答
類似推薦
- 若|x-y+3|與|x+y-1999|互為相反數(shù)，求x+y/x?y的值．
- 若丨x+2丨與丨y-3丨互為相反數(shù),求丨x+y丨的值
- 若丨x+3 丨與丨2y-3 丨互為相反數(shù),求 x+y的值.
- 若丨x+3丨與丨y-1丨互為相反數(shù),求x+y的值.
- 1.若丨X-3丨與丨y+2丨互為相反數(shù),求x+y+3的值.2.若a＜—1,求丨1+a丨+丨3-a丨的值.
- 函數(shù)f(x)=sinx-cosx^2的最小值是?
- 英語翻譯
- I took my grandpa to the hospital this morning,_____ I missed the first class.
- So crazy
- 方差是各個(gè)數(shù)據(jù)與平均數(shù)之差的平方的平均數(shù)
- 函數(shù)y=f(x)與它反函數(shù)y=f^-1(x)怎么讀?
- These are photos of my families.Look at them 改錯(cuò)
猜你喜歡
- 1平面與平面重合,是否屬于平行一類?那重合的兩直線,也屬于平行一類的嗎?
- 2非洲每年因饑餓死亡的人數(shù)及現(xiàn)在饑餓人口數(shù)量拜托各位了 3Q
- 3decide to do sth.還=什么
- 4(7/8)o you think of london?B:5.____london is one of the liveliest cities
- 5啤酒可以托運(yùn)嗎
- 6邊長為2√6的等邊三角形的中心到一邊的距離為?
- 7please give your hand to help me
- 8已知2的X次方等于3的Y次方等于6的Z次方不等等于1,證明X分之一加Y分之一等于Z分之一.
- 9幫我做做?
- 10機(jī)械分析天平TG628A的使用說明書
- 11in winter ,we wear warm coats to protect our bodies_.
- 12( )was most importance to her ,she told me,was her family it this what as