If x = A cos 4 t + B sin 4 t, then is equal to
-16 x
16 x
x
-x
The differential equation y dy/dx + x = c represents
a family of hyperbolas
a family of circles whose centres are on the y- axis
a family of parabolas
a family of circles whose centres are on the x- axis
The differential equation of all non- horizontal lines in a plane is
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
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
The order of the differential equation is
3
2
1
The differential equation of system of concentric circles with center (1,2) is
(x-2) + (y-1) dy/dx = 0
(x+1) dy/dx + (y-2) = 0
(x + 2) dy/dx
(x-1) + (y - 2) dy/dx = 0
The differential equation of all parabolas whose axes are parallel to X-axis, is
The degree of the differential equation
Not defined
If y = a sin(5 x+c), then
