楼主的1 2题看不懂 什么=02?第三题x1=根号二,x2=根号3
1,x²-x-780=0 2,x²-10x-475=0 3,x²-(√2)x-(√3) x
4个回答
相关问题
-
3x2+2x-1≥0 x2-3x-10>0 4x2-11x-3<0 -x2+3x+10>0 4个不等式求解
-
4X1+2X2-X3=0 3X1-X2+2X3=0 11X1+3X2=0
-
(1)3x2-15=0(2)x2+4x-6=0(3)2x2-7x+3=0(4)(x+2)2-10(x+2)+24=0.
-
(x1-x2+4x3-2x4=0;x1-x2-x3+2x4=0;3x1+x2+7x3-2x4=0;x1-3x2-12x3
-
(1)x²-2x+1/x²+9x-10≥0 (2)3x²-7x/2x²-5x-3
-
x²+2x=0 3x²-6x-2=0 4x²+4x-1=-10-8x
-
1、x²+2x-3=0 2、x²-7x+6=0 3、x²+2x-1=0
-
X1 - X3 - X4 -5X5=0 X1+2X2+3X3+3X4+7X5=0 X1+X2+X3+X4+X5=0 X2
-
矩阵T=(X1 X2 X3)=(x1+x2 x1-x2 x3),e1=(1 0 0),e2=(0 1 0),e3=(0