A. 6x2+5xy+y2+9x+4y=c
B. 6x2+5xy+y2-9x-4y=c
C. 6x2-5xy-y2-9x-4y=c
D. 3x2+5xy+2y2-9x-4y=c
The solution of (x+y+1)dx+(3x+4y+4)dy=0 is
Solution of differential equation dy/dx = (1+y2) (1+x2)-1is
The line 4x + 6y + 9=0, touches the parabola y2=4x at the point
The solution of 3excos2ydx+(1-ex)cot y dy=0 is
x2+y2=t+(1/t),x4+y4=t2+(1/t2)⇒x3y(dy/dx)=
The radius of the circle r2-2√2r(cos θ + sin θ)-5=0 is
The solution of (1+ex/y)dx+ex/y(1-x/y)dy=0 is
The solution ofn(ex+1)y dy+(y+1)dx=0 is
The curve represented by X= 2( cos t + sin t ), y=( cos t - sin t ) is
The solution of ex-y dx+ey-x dy=0 is