## What is 1st order differential equation?

Definition 17.1.1 A first order differential equation is an equation of the form F(t,y,˙y)=0. A solution of a first order differential equation is a function f(t) that makes F(t,f(t),f′(t))=0 for every value of t.

**How do you solve first order differential equations?**

follow these steps to determine the general solution y(t) using an integrating factor:

- Calculate the integrating factor I(t). I ( t ) .
- Multiply the standard form equation by I(t). I ( t ) .
- Simplify the left-hand side to. ddt[I(t)y]. d d t [ I ( t ) y ] .
- Integrate both sides of the equation.
- Solve for y(t). y ( t ) .

**What do you mean by 1st order homogeneous differential equation?**

Definition 17.2.1 A first order homogeneous linear differential equation is one of the form ˙y+p(t)y=0 or equivalently ˙y=−p(t)y. ◻ “Linear” in this definition indicates that both ˙y and y occur to the first power; “homogeneous” refers to the zero on the right hand side of the first form of the equation.

### How do you find the differential equation?

Differential Equation Taking an initial condition, rewrite this problem as 1/f(y)dy= g(x)dx and then integrate on both sides. Integrating factor technique is used when the differential equation is of the form dy/dx + p(x)y = q(x) where p and q are both the functions of x only.

**What do you mean by implicit algorithm to discretize a differential equation?**

Implicit Scheme: Is one in which the differential equation is discretized in such a way that there are multiple unknowns at n+1 time level on the LHS of the equation and the terms on RHS are known ones at n time level. Let us write Implicit Scheme for eqn (1): (Tjn+1 – Tjn )/ ∆t = (Tj+1n+1 – 2 Tjn+1 + Tj-1n+1) / ∆x2.

**What is discretization method?**

Discretization is the process through which we can transform continuous variables, models or functions into a discrete form. We do this by creating a set of contiguous intervals (or bins) that go across the range of our desired variable/model/function. Continuous data is Measured, while Discrete data is Counted.

#### What is the order of the differential equation?

The order of a differential equation is defined to be that of the highest order derivative it contains. The degree of a differential equation is defined as the power to which the highest order derivative is raised. The equation (f‴)2 + (f″)4 + f = x is an example of a second-degree, third-order differential equation.

**What is the difference between first and second order differential equations?**

Differential equations are described by their order, determined by the term with the highest derivatives. An equation containing only first derivatives is a first-order differential equation, an equation containing the second derivative is a second-order differential equation, and so on.

**What is the first order differential equation for (1) (1)?**

The most general first order differential equation can be written as, dy dt =f (y,t) (1) (1) d y d t = f ( y, t) As we will see in this chapter there is no general formula for the solution to (1) (1). What we will do instead is look at several special cases and see how to solve those. We will also look at some of the theory behind first order

## What are the properties of linear first-order differential equation?

The Linear first-order differential equation possesses the following properties. It does not have any transcendental functions like trigonometric functions and logarithmic functions. The products of y and any of its derivatives are not present.

**How many higher order derivatives does the differential equation have?**

It has only the first derivative dy/dx so that the equation is of the first order and no higher-order derivatives exist. The differential equation in first-order can also be written as;

**What is a linear differential equation?**

Linear differential equations are ones that can be manipulated to look like this: for some functions P ( x) and Q ( x). The differential equation in the picture above is a first order linear differential equation, with P ( x) = 1 and Q ( x) = 6 x 2 .

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