'-y-sqrt ({y)^2-(x)^2}=0;

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

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

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

初值问题 =sqrt {{x)^2-(x)^2(y)^2+1-(y)^2} y(0)=-dfrac (1)(2) .初值问题的解为( )A B C

1.求下列齐次方程的通解：(1)xy-y-sqrt(y^2)-x^(2)=0;(3)（x^2+y^2)dx-xydy=0;(5)(2xsin(y)/(x)+3y

设 (x+y,x-y)=2((x)^2+(y)^2)(e)^(x^2-{y)^2}, 则 _(x)(x,y)-(f)_(y)(x,y)= __

求微分方程dfrac (dy)(dx)=dfrac (y-sqrt {{x)^2+(y)^2}}(x)的通解.(此题总分值6分)求微分方程的通解.

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

(x,y)=(x)^2-(y)^2-x-|||-__ B . (x,y)=(x)^2-(y)^2-x-|||-__C . (x,y)=(x)^2-(y)^2-x