Question:
Solution of the differential equation $xdy - ydx = 0$ represents a
Solution of the differential equation $xdy - ydx = 0$ represents a
Updated On: Aug 9, 2024
- parabola
- circle
- hyperbola
- straight line
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The Correct Option is D
Solution and Explanation
$x \cdot d y-y \cdot d x=0$
$\Rightarrow x d y=y d x$
$\frac{d y}{y}=\frac{d x}{x}$
$\Rightarrow \log y=\log x+\log c $
$ \Rightarrow \log y=\log c x$
$ \Rightarrow y=x c$
$\Rightarrow x d y=y d x$
$\frac{d y}{y}=\frac{d x}{x}$
$\Rightarrow \log y=\log x+\log c $
$ \Rightarrow \log y=\log c x$
$ \Rightarrow y=x c$
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Concepts Used:
Differential Equations
A differential equation is an equation that contains one or more functions with its derivatives. The derivatives of the function define the rate of change of a function at a point. It is mainly used in fields such as physics, engineering, biology and so on.
Orders of a Differential Equation
First Order Differential Equation
The first-order differential equation has a degree equal to 1. All the linear equations in the form of derivatives are in the first order. It has only the first derivative such as dy/dx, where x and y are the two variables and is represented as: dy/dx = f(x, y) = y’
Second-Order Differential Equation
The equation which includes second-order derivative is the second-order differential equation. It is represented as; d/dx(dy/dx) = d2y/dx2 = f”(x) = y”.
Types of Differential Equations
Differential equations can be divided into several types namely
- Ordinary Differential Equations
- Partial Differential Equations
- Linear Differential Equations
- Nonlinear differential equations
- Homogeneous Differential Equations
- Nonhomogeneous Differential Equations