方程 {2x+3y/4+2x-3y/3=7 {2x+3y/3+2x-3y/2=8
来源:学生作业帮助网 编辑:六六作业网 时间:2025/01/11 16:39:43
方程{2x+3y/4+2x-3y/3=7{2x+3y/3+2x-3y/2=8方程{2x+3y/4+2x-3y/3=7{2x+3y/3+2x-3y/2=8方程{2x+3y/4+2x-3y/3=7{2x+
方程 {2x+3y/4+2x-3y/3=7 {2x+3y/3+2x-3y/2=8
方程 {2x+3y/4+2x-3y/3=7 {2x+3y/3+2x-3y/2=8
方程 {2x+3y/4+2x-3y/3=7 {2x+3y/3+2x-3y/2=8
2x+3y/4+2x-3y/3=7 ①
2x+3y/3+2x-3y/2=8 ②
①-②,得y/4=-1
解之,得y=-4
把y=-4代入①,得4x+1=7
解之,得x=3/2
∴x=3/2,y=-4
解方程x-3y+1=2x-y=3x-2y+4
解方程x-3y+1=2x-y=3x-2y+4
解方程3(2X-Y)+4(X-2Y)=87 2(3X-Y)-3(X-Y)+82
3分之x+y+2分之x-y=2,4(x+y)-7(x-y=-2用换元法解方程
2(X-Y)/3=(X+Y)/4 -1 6(X+Y)=4(2X-Y)+16解方程
解方程x+y+(x+y/2)=15 3x+5y+4(x+y/2)=62
(x-y) (x-2y)+(x+2y) (x-3y)-2(x-3y) (x-4y)=
解方程2/X+3/Y=0.25. 4/X-X+2/Y=1
X×X-2XY-Y×Y+2X-2Y+2=02X×2X-4XY-2Y×2Y+3X-3Y+4=0X×X+2XY+Y×Y+X+Y-56=0X×X-2XY+Y×Y-X+Y-12=0X×X-3XY+Y×Y=-13X×3X-XY+3Y×3Y=13 两个在一起的方程之间有所联系(要求一步一步写出来)
解方程:(x+3)(y-2)=(x-3)(y+10) (x-1)(y+3)=(x+2)(y+12)
解分式方程:10/(x+y)+3/(x-y)=-5,15/(x+y)-2/(x-y)=-1
初二上学期方程题 4x+y=5 5x+4y=63x-2y=1 2x+3y=13x-2y=7 7x+5y=32x+3y=17 2x-y=-4x+5y=6 2x+y=23x-6y=4 3x+2y=52x+y=73x-4y=53x+y=1x-2y=-1x+y=42x+3y=92x-3y=74x+5y=3x+y=20004x+6y=90003x+5y=113x-2y=42x+3y=215x-2y=5x+y=54x+3y=182x+3y=16x+4y=132x+3y=40x
解关于x,y的方程2x+3y=m.4y+5y=n
解关于x,y的方程2x+3y=m.4y+5y=n
解方程 x+y+z=0 4x+2y+z=3 9x-3y+z=28解方程x+y+z=04x+2y+z=39x-3y+z=28
证明:代数式[(x+y)(x-y)-(x+y)^2-2y(x-y)-2xy]/xy 的值为x,y的值无关 解方程 (x+1)^5/(-1-x)^4=3x+7一定要100%正确阿.
求方程 dy/dx+x(y-x) +x^3(y-x)^2=1的通解~
e^y+y^3+2x=1参数方程