1.x^2-6x-2y+11=0
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1.x^2-6x-2y+11=0
2x-y+1=0
2.x^2-xy-2y=0
7x^2-y^2-x-1=0
3.x^2-2y^2-y=1
2x^2-4y^2+x=6
最好有过程,注意是方程组!
2x-y+1=0
2.x^2-xy-2y=0
7x^2-y^2-x-1=0
3.x^2-2y^2-y=1
2x^2-4y^2+x=6
最好有过程,注意是方程组!
1.x^2-6x-2y+11=0
2x-y+1=0
解方程组得:
[x,y]= solve('x^2-6*x-2*y+11=0','2*x-y+1=0 ')
x =
9
1
y =
19
3
2.x^2-xy-2y=0
7x^2-y^2-x-1=0
[x,y]= solve('x^2-x*y-2*y=0 ','7*x^2-y^2-x-1=0 ')
x =
-7/4+1/4*33^(1/2)
-7/4-1/4*33^(1/2)
-1/2+1/6*33^(1/2)
-1/2-1/6*33^(1/2)
y =
-17/4+3/4*33^(1/2)
-17/4-3/4*33^(1/2)
2-1/3*33^(1/2)
2+1/3*33^(1/2)
3.x^2-2y^2-y=1
2x^2-4y^2+x=6
解方程组得:
[x,y]= solve('x^2-2*y^2-y=1','2*x^2-4*y^2+x=6 ')
x =
2
-11
y =
1
15/2
我用计算机算的
答案绝对保证正确
过程麻烦一点
自己对照答案.
好好计算一下:
2x-y+1=0
解方程组得:
[x,y]= solve('x^2-6*x-2*y+11=0','2*x-y+1=0 ')
x =
9
1
y =
19
3
2.x^2-xy-2y=0
7x^2-y^2-x-1=0
[x,y]= solve('x^2-x*y-2*y=0 ','7*x^2-y^2-x-1=0 ')
x =
-7/4+1/4*33^(1/2)
-7/4-1/4*33^(1/2)
-1/2+1/6*33^(1/2)
-1/2-1/6*33^(1/2)
y =
-17/4+3/4*33^(1/2)
-17/4-3/4*33^(1/2)
2-1/3*33^(1/2)
2+1/3*33^(1/2)
3.x^2-2y^2-y=1
2x^2-4y^2+x=6
解方程组得:
[x,y]= solve('x^2-2*y^2-y=1','2*x^2-4*y^2+x=6 ')
x =
2
-11
y =
1
15/2
我用计算机算的
答案绝对保证正确
过程麻烦一点
自己对照答案.
好好计算一下:
y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组,
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