急,看不懂问我(y+3)^2/8-y=(y+3)/4-(y-1)/2
我问一道数学题 3(x-y)-2(x+y)+2其中x=-1 y=3/4
1.5y+8y-6y=2y-3
微分方程(1)(y'')^2+5y'-y+x=0;(2)y''+5y'+4y^2-8x=0;(3)(3x+2y)dx+(
求微分方程y''-3y'+2y=2xe^x的通解,但是细节看不懂
已知y^2+3y-1=0求y^4/y^8+3y^4+1的值
急!急!两道高数题!xy"+y'^2=y'求其通解;y"=(1+y')^3/2求:当y"|(x=0)=0,y'|(x=0
已知y满足不等式(-y+1/2)-y>2+(y+2/3),化简/y+1/+/2y-1/=_____ 急!
1.3x+4y=256x+5y=38问:x与y各是多少?2.条件:7z-3=2y-6=4y-16=3x-8[y*y-(x
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)
求下列微分方程的通解或特解:(1) 3y''-2y'-8y=0 (2) 4y"-8y'+5y=0
解3y+5/3y-6=1/2+5y-4/2y-4