1.求下列微分方程的通解:-|||-(1) dfrac (dy)(dx)+y=(e)^-x :-|||-(2) '+y=(x)^2+3x+2 ;-|||-(3) '+ycos x=(e)^-sin x ;-|||-(4) '+ytan x=sin 2x ;1.求下列微分方程的通解:-|||-(1) dfrac (dy)(dx)+y=(e)^-x :-|||-(2) '+y=(x)^2+3x+2 ;-|||-(3) '+ycos x=(e)^-sin x ;-|||-(4) '+ytan x=sin 2x ;

1.求下列微分方程的通解:-|||-(1) dfrac (dy)(dx)+y=(e)^-x ;-|||-(2) +y=(x)^2+3x+2;-|||-(3) +

1.求下列微分方程的通解:-|||-(1) dfrac (dy)(dx)+y=(e)^-x =-|||-(2) +y=(x)^2+3x+2 =-|||-(3)

1.求下列微分方程的通解:-|||-(2) +y=(x)^2+3x+2 ;

求下列微分方程的通解: +y=(x)^2+3x+2;求下列微分方程的通解: ;

求微分方程 cos dfrac (y)(x)dy=(ycos dfrac (y)(x)-x)dx 的通解.

1.求下列微分方程的通解:-|||-(1) dfrac (dy)(dx)+y=(e)^-x;

1.微分方程(1-(x)^2)(y)^2dfrac (dy)(dx)+(2(x)^2-1)(y)^3=(x)^3是(1-(x)^2)(y)^2dfrac (dy

(4)求微分方程的通解.-|||-① y=xy ;-|||-③ dfrac (dy)(dx)=dfrac (y)(x)+(cos )^2dfrac (y)(x)

1.求下列齐次方程的通解:-|||-(1) -y-sqrt ({y)^2-(x)^2}=0;-|||-(2) dfrac (dy)(dx)=yln dfrac

1.求下列齐次方程的通解:-|||-(1) -y-sqrt ({y)^2-(x)^2}=0;-|||-(2) dfrac (dy)(dx)=yln dfrac