1-1/2y=3-1/6y
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1-1/2y=3-1/6y
1-1/2y=3-1/6y
1-1/2y=3-1/6y
1/6
y (3y^2+8y-3)-6y(3y+2y-1)+9y
通分 y+3/y*y-6y+9,1/2y+6,y-1/y*y-9
3Y-2=Y+1+6Y
3y+2=y-1+6y 不要分数
y(y-2)²-y(y+3)(y-5) y=1/2 化简求值
y(y-2)²-y(y+3)(y-5) y=1/2 化简求值
y(y-2)²-y(y+3)(y-5) y=1/2 化简求值
3y+2=1+6y
3y+2=1+6y
常微分方程的通解dy/dx=(x-y+1)/(x+y-3)y^4=2y^n+y=0y''+6y'+9y=e^(-3x)y''+y'-2y=4e^(2x)
(y-2)(y^2-6y-9)-y(y^2-2y-15),其中y=1/2.先化简再求值.
4y(y-1)=3 3y^2+2√6y=-2
解3y+5/3y-6=1/2+5y-4/2y-4
(3y-1)(2y-3)+(6y-5)(y-4)=?xie
(3y-1)(2y-3)+(6y+5)(y-4)=?
(y+1)分之(2y+3)=(3y+4)分之(6y+7)
2(x+y)-3(x-y)=1 6(x+y)+(x-y)=51
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1