The differential equation of all non- horizontal lines in a plane is
The degree of the differential equation is
0
1
2
3
If x2 + y2 = 1, then
yy" - (2 y' )2 + 1 = 0
yy" + (y')2 + 1 = 0
yy" - (y' )2 - 1 = 0
yy" + 2 (y' )2 + 1 = 0
The solution of the differential equation dy/dx = ex+y is
ex + ey = c
ex - ey = c
ex + e-y = c
ex - e-y = c
y = 2 e2 x - e-x is a solution of the differential equation
y2 + y1 + 2 y = 0
y2 - y1 + 2 y = 0
y2 + y1 = 0
y2 - y1 - 2 y = 0
If x = A cos 4 t + B sin 4 t, then is equal to
-16 x
16 x
x
-x
The differential equation of the family of curves y = a cos (x +b) is
None of these
If y = a sin(5 x+c), then
The differential equation of all parabolas whose axes are parallel to X-axis, is
The equation of family of curve is y2 = 4a (x+a) then differential equation of the family is
y = y' + x
y = y" + x
y = 2y'x + yy'2
y" + y' + y2 = 0