Solve `(y+sinxcos^2(xy))/(cos^2(xy))dx+(x/(cos^2(xy))+siny)dy=0`

If 3sin(xy)+4cos(xy)=5, then (dy)/(dx)=(y)/(x) (b) (3sin(xy)+4cos(xy))/(3cos(xy)-4sin(xy))(c)(3cos(xy)+4sin(xy))/(4cos(xy)-3sin(xy))(d) none

Solve: {(xy)cos(xy)+sin(xy)}dx+x^2cos(xy)dy=0

Solve (dy)/(dx)=(x^(2)+3y^(2))/(2xy)

Solve (1+x^(2))(dy)/(dx)=xy

Solve: (x^2+2xy+y^2+1)(dy)/(dx)=2(x+y)

(3xy+y^(2))dx+(x^(2)+xy)dy=0

y^(2)dx+(x^(2)+xy+y^(2))dy=0

y(xy+1)dx+x(1+xy+x^(2)y^(2))dy=0

Solve (dy)/(dx)=(x^(2)+xy)/(x^(2)+y^(2))

Solve -x^(2)(dy)/(dx)=2xy+y^(2)