若(|x+1|+|x-2|)(|y-2|+|y+1|)+(|z-3|+|z+1|)=13,求x+2y+3z的最小值
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/04 03:30:00
xSn0}vWx,I7ig`BMqQ60
֒?
i߅s qIe?>''\tR^OlH1H2h2)jHk5I5Sl?fð0'tt{ίoB
-XѡcY
c.q :<MH%<78~Zͪ%쥳fy"U\%#*Sš~6:E%^}sup=0߲xBGfZjYf8sU&
ʝdʞ,."Z8K(1QvG)X
f hM^HhBFDmL`X$O )mYtJnm蕔[*
5l*
-ƋYW68CvuِMxܝ}=c|5!<:ݝsPmuFy`m|I-C^SsogY::XK
若√x-1-√1-x=(x+y)²先化简再求值:(1/2x)-(1/x+y)[x²-y²+(x+y/2x]
若|x+y-1|+(x-y-2)²=0,求代数式(x+2y)(x-2y)-(2x-y)(-y-2x)的值.
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()
若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值
计算:1/(2x) - 1/(x+y)((x+y)/(2x) - x - y)
化简1/2x-1/x+y(x+y/2x-x-y)
计算2x/1-x+y/1·(2x/x+y-x-y)
1/2x-(x+y/2x -x-y)÷(x+y)
若y=x(x-1)(x-2)(x-3),则y′(0)=
若x*x+y*y=x+y-1/2,求x,y的值如题
若x²+y²+1≤2x+2y,求x+y.(详解)
若(5x+y)/(7x+10y)=1/2则x/y=
若x / x-y = 1/2,则x/y等于( )若x / x-y = 1/2,则x/y等于( )
若x.y属于R,且满足(X*X+Y*Y+2)(X*X+Y*Y-1)-18≤0.求证:XY≤2
分式的加减:[(x/y-y/x)除以(x+y)+x(1/y-1/x)]除以1+x/y,其中x=5,y=2
若1≤x*x+y*y≤4,则试求x*x-2*x*y+3*y*y的取值范围急!!!!!!!!!!!!!!(今晚就要)
(x-y)(x-y)2(y-x) (x+2y-?)(x-2y+?)
若变量x,y满足约束条件{x>=-1;y>=x;3x+2y