## Which of the following is an example of a separable differential equation?

Separable Differential Equations Examples Since the given differential equation can be written as dy/dx = f(x) g(y), where f(x) = x + 3 and g(y) = y -7, therefore it is a separable differential equation. Answer: y’ = xy – 21 + 3y – 7x is a separable differential equation.

**What it means for a differential equation to be separable?**

Definition: Separable Differential Equations. A separable differential equation is any equation that can be written in the form. y′=f(x)g(y). The term ‘separable’ refers to the fact that the right-hand side of Equation 8.3.1 can be separated into a function of x times a function of y.

**What is the first step in solving a separable differential equation?**

Steps To Solve a Separable Differential Equation

- Get all the y’s on the left hand side of the equation and all of the x’s on the right hand side.
- Integrate both sides.
- Plug in the given values to find the constant of integration (C)
- Solve for y.

### Which differential equation is not separable?

y = y sin(x − y) It is not separable. The solutions of y sin(x−y) = 0 are y = 0 and x−y = nπ for any integer n. The solution y = x−nπ is non-constant, therefore the equation cannot be separable.

**Is dy dx xy separable?**

So something like dy/dx = x + y is not separable, but dy/dx = y + xy is separable, because we can factor the y out of the terms on the right-hand side, then divide both sides by y.

**How do you solve a separable equation?**

The method for solving separable equations can therefore be summarized as follows: Separate the variables and integrate.

- Example 1: Solve the equation 2 y dy = ( x 2 + 1) dx.
- Example 2: Solve the equation.
- Example 3: Solve the IVP.
- Example 4: Find all solutions of the differential equation ( x 2 – 1) y 3 dx + x 2 dy = 0.

#### How do you prove a differential equation is separable?

Note that in order for a differential equation to be separable all the y ‘s in the differential equation must be multiplied by the derivative and all the x ‘s in the differential equation must be on the other side of the equal sign.

**How do you separate XY?**

Three Steps:

- Step 1 Move all the y terms (including dy) to one side of the equation and all the x terms (including dx) to the other side.
- Step 2 Integrate one side with respect to y and the other side with respect to x. Don’t forget “+ C” (the constant of integration).
- Step 3 Simplify.