y-2 y-3=2-1 3-y

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/17 22:04:37
y-2 y-3=2-1 3-y
1.5y+8y-6y=2y-3

移项、得1.5y=-3系数化为一、y=-2很简单的呀

(y^2+2y)^2+2(y^2+2y)-3=0[解方程]

再问:看不清你写的.....再答:看不清?基本上是数字啊再问:orz....你可以打出来给我吗?再答:好的,但要好几分钟哦

解方程3y^2-(2y+1)(y-2)=(y-5)(y-1)

∵3y^2-(2y+1)(y-2)=(y-5)(y-1)==>3y^2-2y^2+3y+2=y^2-6y+5==>9y==3==>y=1/3∴原方程的解是y=1/3.

5(x+y-2)=3-y

x=5y=-2

(y^2-3y+2)(y^2+3y-2)=y^2(y+3)(y-3)

y^4-(3y-2)^2=y^4-9y^29y^2=(3y-2)^23y=3y-23y=-(3y-2)无解y=1/3

已知X-Y/X+Y=3,求代数式2(x-y)/X+Y-3X+Y/X+Y

X+Y分之X-Y等于3x=-2yX+Y分之2(x-y)减X+Y分之3X+Y=(-x-3y)/(x+y)=1

求微分方程y”-3y’+2y=5

1.齐次通解Y特征方程为:r²-3r+2=0(r-1)(r-2)=0r=1或r=2Y=C1e^x+C2e^2x2.非齐次特解y*设y*=ay*'=y*''=02a=5a=5/2所以通解为:y

已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)

因为(x-y)/(x+y)=3,则(x+y)/(x-y)=1/3则5(x-y)(x+y)-(x+y)/2(x-y)=5*3-1/(3*2)=15-1/6=89/6

(2y-3)(-y+4)=(y-2)(y-5)-3y(y-7/3)解方程

11y-12-2y²=y²-7y+10-(3y²-7)18y=12+10+7=39y=39/18

{x=y-3 {x+y=11 {2x+y=13 {3x-2y=8

(1){x=y-3{x+y=11y-3+y=112y=14y=7x=y-3=7-3=4所以原方程组的解为x=4,y=7(2){2x+y=13{3x-2y=8y=13-2x3x-2(13-2x)=83x

{2x+y/3-2y=0 2(2x+y)-5=7y

x=-2.5y=-3再问:过程再答:2x+y/3-2y=0①2(2x+y)-5=7y②展开②式,4x+2y-5=7y,移项整理的得4x-5y=5③将①整理得2x-5y/3=0④将④×2得4x-10y/

微分方程y''+2y'-3y=0通解

齐次方程:r^2+2r-3=0r=-3orr=1通解为C1e^(-3x)+C2e^x

y''+y'+2y=x^2-3通解.

特征方程为r²+r+2=0,则r=(-1±√7i)/2∴a=-1/2,b=√7/2∴齐次方程的通解为Y=e^(-x/2)[C1cos(√7x/2)+C2sin(√7x/2)]再求非其次方程的

先化简,在求值:6y-(y+2分之y + 2-y分之y)除以y³-4y-2y²+8分之y,其中y=

6y-(y+2分之y+2-y分之y)除以y³-4y-2y²+8分之y=6y-[(2y-y²+2y+y²)/(4-y²)]÷y/(y-2)³=

2y''+y'-y=0

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

解方程(1-3y)^2+(2y-1)^2=13(y-1)(y+1)

(1-3y)^2+(2y-1)^2=13(y-1)(y+1)1+9y²-6y+4y²+1-4y=13y²-13;10y=15;y=3/2;很高兴为您解答,skyhunte

已知x²+4y+y²—6y+13=0,求2x+3y的值

已知x²+4x+y²-6y+13=0那么(x+2)²+(y-3)²=0所以x+2=0,y-3=0故x=-2,y=3所以2x+3y=2*(-2)+3*3=5如果不

解方程:3y^2-(2y+1)(y-1)=(y-5)(y+1)

∵3y^2-(2y+1)(y-2)=(y-5)(y-1)==>3y^2-2y^2+3y+2=y^2-6y+5==>9y==3==>y=1/3∴原方程的解是y=1/3.希望对你有所帮助,