(1)y+1/y=5/2 (2) 2y+6/y=7 (3) y+1/y+2=0
解方程3y^2-(2y+1)(y-2)=(y-5)(y-1)
解方程:3y^2-(2y+1)(y-1)=(y-5)(y+1)
解3y+5/3y-6=1/2+5y-4/2y-4
微分方程(1)(y'')^2+5y'-y+x=0;(2)y''+5y'+4y^2-8x=0;(3)(3x+2y)dx+(
解方程,3y^3+(y+3)(6-2y)+3y(y+2)(2-y)-2(y^2+1)=0
1.5y+8y-6y=2y-3
微分方程y''-3y'+2y=5,y(0)=1,y'(0)=2求解过程
2y''+y'-y=0
2y+8y-1=0
微分方程y''=3√y,x=0,y=1,y'=2
代数式4y² - 2y + 5 = 7,那么代数式2y² - y + 1
初二解分式方程5/y^2+y-1/y^2-y=0