y=(x^3+x)/(x^2+1)是怎么化简成y=x
先化简再求值(x-y)(x+y)-(x-2y) 的完全平方+x(3x-5y)-(x-y)(x-2y),其中x=1/2 y
(3x-y)^2+(3x+y)(3x-y),x=1,y=-2
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
函数,y=3x/(x^2+x+1) ,x
函数y=3x/(x^2+x+1) (x
1/(x+y)-1/(x+y)=3/20 2/(x+y)+3/(x-y)=19/20 这是
2(x+y) 3x+3y=24 x+y/2x x y/2y= 1
y=(x^2+x)/(x+1)
已知X-Y/X+Y=3,求代数式2(x-y)/X+Y-3X+Y/X+Y
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
请问一下,如果y=4x*x*x+3x*x+x+2x+1,怎么用MATLAB实现,x等于多少y
已知x=1/3,y=-1/2,求代数式x-(x+y)+(x+2y)-(x+3y)+(x+4y)-(x+5y)+...-(