Z[x]是整系数多项式环,(x)表示x生成的主理想,写出(x),并求Z[x]/(x),证明Z[x]/(x)同构与Z
Z[x]是整系数多项式环,(x)表示x生成的主理想,写出(x),并求Z[x]/(x),证明Z[x]/(x)同构与Z
数学 多项式(x+y-z)(x-y+z)-(y+z-x)(z-x-y)公因式
分解因式:(1):x(x-y)+y(y-X) 多项式(x+y-z)(x-y+z)-(y+z-X)(Z-x-y)的公因式是
x,y,z正整数 x>y>z证明 x^2x +y^2y+z^2z>x^(y+z)*y^(x+z)*z^(x+y)
x y z x+y--- = --- = ---- ----y+Z z+x x+y ,求 z 的值 .求 x+y----
(x+y-z)(x-y+z)=
x(y+z)是单项式还是多项式?
试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y)
设z=z(x,y)是方程x^2+z^2=ysin(z/x)确定的隐函数,求Z对x,y的偏导数
x+y+z=1 求xyz/(x+y)(y+z)(z+x)的最大值
若xy-z不等于0,且(y+x)/x=(z+x)/y=(y+x)/z,求[(y+z)(z+x)(x+y)]/xyz的值?
已知x+y-z/z=x-y+z/y=-x+y+z/x,且xyz不等于0,求分式[(x+y)(x+z)(y+z)]/xyz