Differential EquationHard
Question
The differential equation of all conics whose axes coincide with the axes of coordinates is of order
Options
A.2
B.3
C.4
D.1
Solution
P(x, y) = ax2 + by2 + 2hxy + 2gx + 2fy + c = 0

⇒ h = g = f = 0
conic : ax2 + by2 + c = 0 ⇒ x2 +
= 0 order = 2
⇒ h = g = f = 0
conic : ax2 + by2 + c = 0 ⇒ x2 +
Create a free account to view solution
View Solution FreeMore Differential Equation Questions
Solution of differential equation f(x) = f2 (x) + f(x) y + f′(x) y is...The value of the constant ′m′ and ′c′ for which y = mx + c is a solution of the differential equ...If $y = y(x)$ satisfies the differential equation$16(\sqrt{x + 9\sqrt{x}})(4 + \sqrt{9 + \sqrt{x}})cosydy = (1 + 2$ siny...The slope of a curve at any point is the reciprocal of twice the ordinate at that point and it passes through the point ...The differential equation for the line y = mx + c is ( where c is arbitrary constant)-...