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

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(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

y^(4)+2y''''''+3y''''=0通解y^(4)+2y''''''+3y''''=0通解y^(4)+2y''''''+3y''''=0通解对应的特征方程是r^4+2r^3+3r^2=0解得r1,2=0,r3,4=-1±

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

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

解方程:(y-3y+2)(y+3y-2)=y(y+3)(y-3)

解方程:(y-3y+2)(y+3y-2)=y(y+3)(y-3)解方程:(y-3y+2)(y+3y-2)=y(y+3)(y-3)解方程:(y-3y+2)(y+3y-2)=y(y+3)(y-3)(y-3

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

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

2y''+y'-y=0

2y''''+y''-y=02y''''+y''-y=02y''''+y''-y=02y''''+y''-y=0特征方程:2r^2+r-1=0根为:-1,1/2y=C1e^(-x)+C2e^(x/2)2y''''+y''-y=0的

4Y^3+3Y^2+4Y+1=0求Y

4Y^3+3Y^2+4Y+1=0求Y4Y^3+3Y^2+4Y+1=0求Y4Y^3+3Y^2+4Y+1=0求Y答:4Y^3+3Y^2+4Y+1=0除了用盛金公式可以解答这个一元三次方程外,可以用软件得到

(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)

(y+1)分之(2y+3)=(3y+4)分之(6y+7)(y+1)分之(2y+3)=(3y+4)分之(6y+7)(y+1)分之(2y+3)=(3y+4)分之(6y+7)(2y+2+1)/(y+1)=(

(y-4)(3y+2)-(3y-7)(2y+1),其中y=4/3

(y-4)(3y+2)-(3y-7)(2y+1),其中y=4/3(y-4)(3y+2)-(3y-7)(2y+1),其中y=4/3(y-4)(3y+2)-(3y-7)(2y+1),其中y=4/3(y-4

2y+5/3y-6-y/2=5y-4/2y-4

2y+5/3y-6-y/2=5y-4/2y-42y+5/3y-6-y/2=5y-4/2y-42y+5/3y-6-y/2=5y-4/2y-42y+5/3y-6-y/2=5y-4/2y-42y+5/3y-

2(y-4)(3y+2)-5(-3y+7)(y+1),其中y=-1

2(y-4)(3y+2)-5(-3y+7)(y+1),其中y=-12(y-4)(3y+2)-5(-3y+7)(y+1),其中y=-12(y-4)(3y+2)-5(-3y+7)(y+1),其中y=-12

解分式方程(y+3)/(y^2+y)-1/(1-y)=4/y要过程

解分式方程(y+3)/(y^2+y)-1/(1-y)=4/y要过程解分式方程(y+3)/(y^2+y)-1/(1-y)=4/y要过程解分式方程(y+3)/(y^2+y)-1/(1-y)=4/y要过程(

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

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

已知4y^2+4y+1+|x-1|=0 求[(x-2y)^2-(2x+y)(2x-y)+(3x-y)(x+y)]÷(2y)的值

已知4y^2+4y+1+|x-1|=0求[(x-2y)^2-(2x+y)(2x-y)+(3x-y)(x+y)]÷(2y)的值已知4y^2+4y+1+|x-1|=0求[(x-2y)^2-(2x+y)(2

1.(X-Y)/13=Y/7问(x+y)/y=?.2.x/6=y/4=z/3(x.z.y不为0)则(X+3Y)/3Y-2Z=?

1.(X-Y)/13=Y/7问(x+y)/y=?.2.x/6=y/4=z/3(x.z.y不为0)则(X+3Y)/3Y-2Z=?1.(X-Y)/13=Y/7问(x+y)/y=?.2.x/6=y/4=z/

已知x-y=1(y不为0)求[(x+2y)的平方+(2x+y)(x-4y)-3(x+y)(x-y)]/y的值急吖,

已知x-y=1(y不为0)求[(x+2y)的平方+(2x+y)(x-4y)-3(x+y)(x-y)]/y的值急吖,已知x-y=1(y不为0)求[(x+2y)的平方+(2x+y)(x-4y)-3(x+y