解方程(y-1)²+2y(1-y)=0 (1-x)²=0.64
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/31 17:52:23
![解方程(y-1)²+2y(1-y)=0 (1-x)²=0.64](/uploads/image/z/1780179-51-9.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B%28y-1%29%26%23178%3B%2B2y%281-y%29%3D0+%EF%BC%881-x%EF%BC%89%26%23178%3B%3D0.64)
x){|i;֨5TS6460ԭԴ5PxPNMR>Yl(LcՆ.e@PULIգ-:@h;(fkgc dVAF6yvP?ۀ9F@
FPK1+m6Lօ
6Pl<6cM\=(!f3GҶP=P uţqP@u*8P X
解方程(y-1)²+2y(1-y)=0 (1-x)²=0.64
解方程(y-1)²+2y(1-y)=0 (1-x)²=0.64
解方程(y-1)²+2y(1-y)=0 (1-x)²=0.64
解
(y-1)²+2y(1-y)=0
(y-1)²-2y(y-1)=0
(y-1)(y-1-2y)=0
(y-1)(-y-1)=0
∴y=1,y=-1
(1-x)²=0.64
1-x=-0.8或1-x=0.8
∴x=1.8或x=0.2
y2-2y+1+2y-2y2=0
1-y2=0
y=+-1
1-x=+-0.8
x=0.2,x=1.8
①(y-1)²+2y(1-y)=0
y²-2y+1+2y-2y²=0
y²=1
y=1或y-1
②(1-x)²=0.64
1-x=0.8或1-x=-0.8
x=0.2或x=1.8