(0.3y-0.2)/0.5-1/3=1-(0.6y-0.4)/1.
0.2X^2Y-0.5XY^2-0.3X^2Y+0.7X^2Y,当x=-1,y=2/3时,最后=?
解方程组:(0.2x+0.1y)/2- (4x-y)/10=(x-y)/5+ (3x+0.5y)/30 (3x+2y-1
解方程:3y^2-(2y+1)(y-1)=(y-5)(y+1)
解方程3y^2-(2y+1)(y-2)=(y-5)(y-1)
一道初一方程计算题0.4(y-3)/0.3-0.1y-0.2/0.04=1
解方程组{0.2x+0.3y=-0.1,0.5x+(y/3)=1
y'=(x-y+1)/(x+y-3)通解
Matlab 已知y''-3y'+2y=0 y(0)=1 y'(0)=0 ,求y(0.5) 会的帮忙写下程序 用ode4
1.求方程 y''*(1+y^2)=2y*y'^2的通解 2.方程 y^3*y''+1=0 的通解
y(1)=4.y^{3}
初一数学解方程:(0.4y+0.9/0.5)-(y-5/2)=0.3+0.2y/0.3
4y^4-4x^3+0.2x^2y^2+xy^3-1/5x^2y^2-4y^4-x^3y,其中x=-2,y=0.3.