y(4)-2y(3)+y(2)=0

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y(4)-2y(3)+y(2)=0
(y^2)^4y-(-2y)^3y^6=

(y^2)^4y-(-2y)^3y^6=(y^2)^4y-(-2y)^3y^6=(y^2)^4y-(-2y)^3y^6=(y^2)^4y-(-2y)^3y^6=y^8*y+8y^3y^6=y^9+8y

数学题=y(y+3)-4(y+3)2=(y+3)(y-4y-12)

数学题=y(y+3)-4(y+3)2=(y+3)(y-4y-12)数学题=y(y+3)-4(y+3)2=(y+3)(y-4y-12)数学题=y(y+3)-4(y+3)2=(y+3)(y-4y-12)(

y^(4)+2y'''+3y''=0通解

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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)

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)常微分方程的通解dy/dx=(x-y+1)/(x

(2y+5/3y)²-5y×(5/3y+y)=4 求y的值.(2y+5/3y)的平方-5y×(5/3y+y)=4

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解方程:(y-3y+2)(y+3y-2)=y(y+3)(y-3)

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方程y''-4y'+13y=0的通解方程y''=(1+y'*y')/2y的通解

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2y''+y'-y=0

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4Y^3+3Y^2+4Y+1=0求Y

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(x+y)/2- x-y/2=6 3(x+y)=4(x-y)

(x+y)/2-x-y/2=63(x+y)=4(x-y)(x+y)/2-x-y/2=63(x+y)=4(x-y)(x+y)/2-x-y/2=63(x+y)=4(x-y)(x+y)/2-(x-y)/2=

(y+1)分之(2y+3)=(3y+4)分之(6y+7)

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(5)若x/2=y/3(y不为0)则x/y=____,x+y/y=___,y/x-y=___.

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