你令Y=a (a為實(shí)數(shù),即可取任意數(shù)) ,那么就可以求出通解了:
X=35,Y=a ,Z=35-a ;
數(shù)學(xué)題~幫解~~X+Y+Z=70 X-Y=Z
數(shù)學(xué)題~幫解~~X+Y+Z=70 X-Y=Z
X+Y+Z=70 X-Y=Z
X Y Z各為多少?
答案好象很多~
誰能給我一個(gè)通解~?
X+Y+Z=70 X-Y=Z
X Y Z各為多少?
答案好象很多~
誰能給我一個(gè)通解~?
數(shù)學(xué)人氣:668 ℃時(shí)間:2020-06-26 06:58:45
優(yōu)質(zhì)解答
我來回答
類似推薦
- 數(shù)學(xué)題(x+y-z)(x-y+z)=(A+B)(A-B),且A=X則B=?
- 設(shè)0<x,y,z<1,求證x(1-y)+y(1-z)+z(1-x)<1
- 已知有理數(shù)x、y、z兩兩不等,則x?yy?z,y?zz?x,z?xx?y中負(fù)數(shù)的個(gè)數(shù)是( ?。?A.1個(gè) B.2個(gè) C.3個(gè) D.0個(gè)或2個(gè)
- x+y=10 y+z=15 z+x=20 求x,y,z等于多少?
- 數(shù)學(xué)題(x+y+z-2)^2+(y+z+2-x)^2急求!
- 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