3X+Y-6=0 与X^2+Y^2-2Y-4=0连立方程组怎么消去Y? 我要详细过程
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3X+Y-6=0与X^2+Y^2-2Y-4=0连立方程组怎么消去Y?我要详细过程3X+Y-6=0与X^2+Y^2-2Y-4=0连立方程组怎么消去Y?我要详细过程3X+Y-6=0与X^2+Y^2-2Y-
3X+Y-6=0 与X^2+Y^2-2Y-4=0连立方程组怎么消去Y? 我要详细过程
3X+Y-6=0 与X^2+Y^2-2Y-4=0连立方程组怎么消去Y? 我要详细过程
3X+Y-6=0 与X^2+Y^2-2Y-4=0连立方程组怎么消去Y? 我要详细过程
X^2+Y^2-2Y-4=0
3X+Y-6=0
Y=6-3X代入原式
X^2+(6-3x)^2-2(6-3X)-4=0
根据第一个式子得出 y=6-3x
带入第二个式子得出 x^2+(6-3x)^2-2(6-3x)-4=0
化简得出 10x^2-30x+20=0
得出 (x-1)(x-2)=0
解得 x=1或者2
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
若/X+Y-9/+(2X-Y+3)=0求X与Y的值
x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2
(x+y)/2- x-y/2=6 3(x+y)=4(x-y)
x+y/3+x-y/2=6 4(x+y)-2(x-y)=40
x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20
{(x+y)/2+(x-y)/3=6 4(x+y)-3(x-y)=-20
4(x+y)-3(x-y)=-20,2/x+y+3/x-y=6
2(x+y)-3(x-y)=1 6(x+y)+(x-y)=51
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5
【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y)
若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于
常微分方程的通解dy/dx=(x-y+1)/(x+y-3)y^4=2y^n+y=0y''+6y'+9y=e^(-3x)y''+y'-2y=4e^(2x)
2x-y=0与x+y=10
x^2+4y^2-6x+4y+10=0,求x^4-y^4/(x+2y)(x-2y)*x+2y/xy^2+y^3除以(x^2+y^2/y)^2的值
已知圆x^2+y^2+x-6y+m=0与直线x+2y-3