x=2008,y=2006,求〔2x〔x^2y-xy^2〕+xy〔2xy-x^2〕〕÷x^2y的值.
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/19 02:02:02
x=2008,y=2006,求〔2x〔x^2y-xy^2〕+xy〔2xy-x^2〕〕÷x^2y的值.x=2008,y=2006,求〔2x〔x^2y-xy^2〕+xy〔2xy-x^2〕〕÷x^2y的值.
x=2008,y=2006,求〔2x〔x^2y-xy^2〕+xy〔2xy-x^2〕〕÷x^2y的值.
x=2008,y=2006,求〔2x〔x^2y-xy^2〕+xy〔2xy-x^2〕〕÷x^2y的值.
x=2008,y=2006,求〔2x〔x^2y-xy^2〕+xy〔2xy-x^2〕〕÷x^2y的值.
原式=(2x³y-2x²y²+2x²y²-x³y)÷x²y
=x³y÷x²y
=x
=2008
2008 呀
先简化代数式
〔2x〔x^2y-xy^2〕+xy〔2xy-x^2〕〕÷x^2y
=〔2x^2y〔x-y〕+x^2y〔2y-x〕〕÷x^2y
=2x-2y+2y-X
=X
=2008
〔2x〔x^2y-xy^2〕+xy〔2xy-x^2〕〕÷x^2y
=〔2xy(x^2 - xy) + xy(2xy - x^2)〕÷ x^2y
= xy[2x^2 - 2xy + 2xy - x^2]÷ x^2y
= x^2 ÷x
= x
=2008
〔2x〔x^2y-xy^2〕+xy〔2xy-x^2〕〕÷x^2y
=[2x^2y(x-y)+x^2y(2y-x)]÷x^2y=x(x-y)+2y-x=2(x-y)-(x-y)+y=x=2008
求y=(x^2)+2x(x≥0) y=-x+2x(x
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
已知x=2008,y=2006,求x-x÷{x^2-y^2/x^3+y^3[(x-x^2+y^2/y)÷(1/x-1/y)]}的值
当x=2008,y=2009时,求代数式(x-y)/x/(x-(2xy-y^2)/x)
先化简再求值X-｛Y-2X+〔3X-2（2X+Y）+5Y〕｝,并求当X-Y=2的值
Y=X^2X (X>0) 求导Y=X^2X (X>0) 求d(Y)/d(X)
已知x+y=a,2x-y=-2a,求[（x/y-y/x)/(x+y)-x(1/x-1/y)]/[(x+1)/y]的值
若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值
y=x^x^x求导数
求微分 y=x^(x^2)
y=x^2x,求dy
x=2008,y=2006,求〔2x〔x^2y-xy^2〕+xy〔2xy-x^2〕〕÷x^2y的值.
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
如果|X|=4 |Y|=2 且|X+Y|=X+Y 求X+Y
已知|x|=2,|y|=3,|x+y|=-(x+y)求x-y
x+2y=2x+y+1=7x-y 求：2x-y?
x^2+y^2=15,x+y=7,x＞y,求x-y
求(X+Y)(X-Y)(X²+Y²),X=5 Y=2,