3y+7/(y-1)(y-2)=A/(y-1)+B/(y-2),则A=( )B=( )若x+1/x=3,则x²/x^4+x²+1=( )
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3y+7/(y-1)(y-2)=A/(y-1)+B/(y-2),则A=( )B=( )若x+1/x=3,则x²/x^4+x²+1=( )
3y+7/(y-1)(y-2)=A/(y-1)+B/(y-2),则A=( )B=( )
若x+1/x=3,则x²/x^4+x²+1=( )
3y+7/(y-1)(y-2)=A/(y-1)+B/(y-2),则A=( )B=( )若x+1/x=3,则x²/x^4+x²+1=( )
(1)3y+7=A(y-2)+B(y-1)=(A+B)y-2A-B;所以A+B=3,-2A-B=7;解得A=-10,B=13;
(2)题是求x^2/(x^4+x^2+1)吗?
2(y-4)(3y+2)-5(-3y+7)(y+1),其中y=-1
(y-4)(3y+2)-(3y-7)(2y+1),其中y=4/3
y(y-2)²-y(y+3)(y-5) y=1/2 化简求值
y(y-2)²-y(y+3)(y-5) y=1/2 化简求值
y(y-2)²-y(y+3)(y-5) y=1/2 化简求值
1、(-y^3)^5/y^3/ y^2+2(-y)^102、(x-y)^7/(y-x)^6+(x+y)^3/(x+y)^23、已知X^a=5,x^b=3,求X^(3a-2b)的值
关于y的方程a^2y+y=1
y (3y^2+8y-3)-6y(3y+2y-1)+9y
已知3y+7/(y-1)(y-2)=A/y-1+B/y-2,则A=____,B=____
y=(y')^3+y'
(y+1)分之(2y+3)=(3y+4)分之(6y+7)
4(5—2y)+7(y+1)=3(4y-1)+17求y
4*(5—2y)+7(y+1)=3(4y-1)+17求y
4(2y+5)-3y=7(y-5)+4(2y+1)
15.把方程-2y+3-y=2-4y-1变形,下列式子正确的是A.-2y+y-3=2+1+4y B.-2y-y+4y=2-1-3 C.-2y-y-4y=2-1+3 D.-2y+y+4y=2+1-3
[T,Y]=ode45(@rigid,[0 1],[rand(15,1)]);plot(T,Y(:,1),'-',T,Y(:,2),'-.',T,Y(:,3),'.',T,Y(:,4),'-',T,Y(:,5),'-.',T,Y(:,6),'.',T,Y(:,7),'-',T,Y(:,8),'-.',T,Y(:,9),'.',T,Y(:,10),'-',T,Y(:,11),'-.',T,Y(:,12),'-.',T,Y(:,13),'.',T,Y(:,14),'-',T,Y(:,15),'.')
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)