2.求解下列常系数线性微分方程:-|||-(1) ^(4)-5x''+4x=0-|||-(2) ^m-3a(x)^n+3(a)^2(x)^1-(a)^3x=0;-|||-(3) ^(5)-4(x)^m=0;-|||-(4) ''+x'+x=0;-|||-(5) ''-(a)^2s=t+1;-|||-(6) ^m-4x''+5x'-2x=2t+3;-|||-(7) ^(4)-2(x)^n+x=(t)^2-3;-|||-(8) ^m-x=cos t ;-|||-(9) ''+x'-2x=8sin 2t;-|||-(10) ^m-x=(e)^t;-|||-(11) ''+2as'+(a)^2s=(e)^t;-|||-(12) ''+6x'+5x=(e)^2t;-|||-(13) ''-2x'+3x=(e)^-tcos t;-|||-(14) ''+x=sin t-cos 2t;-|||-(15) ''-4x'+4x=(e)^t+(e)^2t+1;-|||-(16) ''+9x=tsin 3t;-|||-(17) ''-2x'+2x=t(e)^tcos t;-|||-(18) ''+2x'+5x=4(e)^-t+17sin 2t;-|||-(19) ''+x=dfrac (1)({sin )^3t};-|||-(20) ''+x=1-dfrac (1)(sin t)

2.求解下列常系数线性微分方程:-|||-(1) ^(4)-5(x)^n+4x=0;-|||-(2) ^m-3a(x)^n+3(a)^2(x)^1-(a)^3x

解下列方程：(1)x2+x=0；(2)x2-2√3x=0；(3)3x2-6x=-3；(4)4x2-121=0；(5)3x(2x+1)=4x+2；(6)(x-4)

求线性方程组_(1)+(x)_(2)+(x)_(3)+(x)_(4)=0-|||-_(2)+2(x)_(3)+2(x)_(4)=1-|||-_(1)+2(x)_

1.求下列微分方程的通解:(1） xy-ylny=0 ;2） 3x^2+5x-5y=0 ;3） √(1-x^2)y=√(1-y^2)4） y-xy=a(y^2+

[试题]解下列方程：（1）12（2-3x）=4x+4；（2）6-3(x+2/3)=2/3（3）2（200-15x）=70+25x（4）3（2x+1）=12.

13.求解下列齐次线性方程组:-|||-(1) ) (x)_(1)+(x)_(2)+2(x)_(3)-(x)_(4)=0, 2(x)_(1)+(x)_(2)

13.求解下列齐次线性方程组:-|||-(1) ) (x)_(1)+(x)_(2)+2(x)_(3)-(x)_(4)=0, 2(x)_(1)+(x)_(2)

6.求解下列齐次线性方程组.-|||-(1) ) (x)_(1)+(x)_(2)+2(x)_(3)-(x)_(4)=0, 2(x)_(1)+(x)_(2)+

1.求下列微分方程的通解:-|||-(1) -yln y=0 ;-|||-(2) (x)^2+5x-5y=0 ;-|||-(3) sqrt (1-{x)^2}y

(2) (x)^n-((x))^2+((x))^3=0-|||-(3) ^n+dfrac (2)(1-x)((x))^2=0 ;-|||-(4) +sqrt (