y=2x-4/x-3 (x>3 )则2x+y 最小值为多少y=2x-4/x-3(x>3 )则2x+y最小值为多少
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/10 21:08:38
x)55ѯ5VШ3V|1ӨBRٜ6yc%nPSMR>)s!zLF0f;C\S_A6LkB ,dmІK´@vF:fAM҂
j[ؚ Uv6<ٽg3$ف|
$$
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
(x-y) (x-2y)+(x+2y) (x-3y)-2(x-3y) (x-4y)=
若2x=3y,则(x*x+y*y)/x*x=?
3^x+2x=y,x
求值域 1,y=(x+2)/(x*x+3x+6) 2,y=3x/(x*x+4)
[2/3x-2/x+y(x+y/3x-x-y)]/x-y/x
化简:{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x
计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x
化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x
x(x-y)2-(y-x)3
2x-y/x+y=4,则4x-2y/2x+2y+3x+3y/2x-y
若x+y=4,则多项式1/2(x+y)+4(x-y)-3(x-y)-3/2(x+y)-x+y值是()
2(x+y)-3(x-y)=3 ,4(x+y)+3(x-y)=15
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
3(x+y)-2(x-y)=11 4(x+y)+3(x-y)=9
3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2