x+x+x+y=20 x+x+y=14 x=?y=?

来源：学生作业帮编辑：作业帮分类：综合作业时间：2024/05/24 11:41:07

x+x+x+y=20 ---(1)
x+x+y=14 -------(2)
(1)-(2)得x =6---(3)
将(3)代入(2) 6+6+y =14
所以 y=2

[x(x-y)-y(x-y)+(x+y)(x-y)]÷2x其中x=2012 y=2013 二元函数f(x,y)=x+y/x-y,求f(y/x,x/y) y=(lnX)/x-x (lim) x/x-y= x+y=5; x^y+y^x=17 因式分解下列式子：x(x-y)+y(y-x)=? 6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5 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 y=x+x^x求导 x-y+5x-4x= ?