y=x+4/x (x
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/29 06:44:36
x)6ѯPШI*G`VyvF|ڿ]CBShikVt';vU@yOv,yo瓝3^b|zy5m젶ڀ9ϧx:iÞ';z|w=YI@]dG=I@G! 4nT
y=x+4/x (x
y=x+4/x (x
y=x+4/x (x
-x-4/x>=2(根号(-x)*根号(-4/x))=4
因为x=4
两边乘以负号
-(-x-4/x)
用均值不等式
基本不等式:a+b>=2根下(ab)
x+x+x+y=60 .x-y=4
y=x+4/x (x
y=|-x.x+4x+5|
(x-y) (x-2y)+(x+2y) (x-3y)-2(x-3y) (x-4y)=
y=x(x
7x:4y,x:y=( ):(
(x-4y)(2x+y)=
5x-4y(y-x)=?
x-y+5x-4x= ?x-y+5x-4x= ?
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
化简 x / y(x+y) - y / x(x+y) =
4x方y/(x-2y)(x+2y)怎么算[x方/x-2y]-4x方y/(x-2y)(x+2y)=?
(x+y)(x^2+y^2)(x-y)(x^4+x^4)=?
x/3=y/4,求(x*x-xy)/(x*x+y*y)的值
x+3y/y-x,其中x=-4,
x(x+y)(x-y)-y(y+x)(y-x)=(x-y)( )填空
x(x-y)+4(y-x)因式分解
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1