use elimination to solve each system of equations 例子:X- Y= 1 X + Y= 3 and 3x-y=26 -2x-y= -24
来源:学生作业学帮网 编辑:学帮网 时间:2024/05/20 19:40:38
use elimination to solve each system of equations
例子:X- Y= 1 X + Y= 3 and 3x-y=26 -2x-y= -24
利用消元法求解每个方程组
1.x-y=1 (1)
x+y=3 (2)
解 (2)-1×(1)代替(2),原方程组化为
x-y=1 (1)
2y=2 (2)
解得y=1代入(1)得x-1=1,x=2,故方程组的解为
x=2,y=1.
2.3x-y=26 (1)
-2x-y=-24 (2)
解 (2)-(-2/3)×(1)代替(2),原方程组化为
3x-y=26 (1)
(-5/3)y=-20/3 (2)
解得y=4代入(1)得3x-4=26,x=10,故方程组的解为
x=10,y=4.
in Chinese
不是消除法,中文好像叫做加减消元法!
例子:X- Y= 1
X + Y= 3
x=2,y=1
3x-y=26
-2x-y= -24
x=10,y=4
加减消元法
1、X- Y= 1 (1)
X + Y= 3 (2)
(1)+(2)得 2x=4 x=2
把x=2代入(1)得 y=1
即 x=2 y=1
2、3x-y=26 (1)
-2x-y= -24 (2)
(1)-(2)得 5x=50 x=10
把x=10代入方程(1)得 3×10-y=26 x=10
即 x=10 x=10
use elimination to solve each system of equations 例子:X- Y= 1 X + Y= 3 and 3x-y=26 -2x-y= -24
use one's ideas to
英语翻译In the world of sports,the March Madness process of elimination is down to the so-called Sweet 16 in the NCAA Men's Basketball Tournament.
英语翻译一、高斯消去法的程序:function [A,b]= Gauss(A,b);%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%use Gaussian elimination method to change 'A' into upper triangular matrix% Nov 26,2008%%%%%%%%%%%%%%%
put one's love to good use
We use s----- to send letters.
put one's love to good use啥意思
put one's love to good use的意思是什么
it,s,for English People to use chopsticks.
I think it's(use)to study English well
That's what I'd like to use.
it's no use trying to dress them up翻译
翻译:you will learn to use new words better if you use a learner's dictionary
it's very easy to use it =it's a ____ of___ to use it(同义句)
作文neccessary for a student to use a mobbile phoneIt‘s neccessary for a student to use a mobbile phone
it's about trying to use technology to open the world up to kids
use for ,use to ,use as use for ,use to ,use as
on dividend什么意思[00:21.22]1.M:What do you think of the government’s new tax cut proposal?[00:27.44]W:Though it may give some benefit to the poor.[00:30.40]Its key component is the elimination of tax on dividends.[00:34.88]That means the rich