1. For each ODE below give the order, indicate the dependent and independent variables, and whether the DE is linear or nonlinear. (a) Shortest time problem, Galileo 1630: 2 dy y |1+ dr = C (b) Van der Pol's equation, triode vacuum tube: dy – 0.1(1 – y²). dy + 9y = 0 d.x %3D | dx? (e) 3 dar = t3 + xt dt dy (d) dx? dy = COS x - dx dy (e) + sin x – y = 0 dx
1. For each ODE below give the order, indicate the dependent and independent variables, and whether the DE is linear or nonlinear. (a) Shortest time problem, Galileo 1630: 2 dy y |1+ dr = C (b) Van der Pol's equation, triode vacuum tube: dy – 0.1(1 – y²). dy + 9y = 0 d.x %3D | dx? (e) 3 dar = t3 + xt dt dy (d) dx? dy = COS x - dx dy (e) + sin x – y = 0 dx
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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![# Lesson on Ordinary Differential Equations (ODEs)
## Problem Set
### 1. Analysis of Differential Equations
For each ODE below, provide the order, indicate the dependent and independent variables, and determine whether the DE is linear or nonlinear.
#### (a) Shortest Time Problem, Galileo 1630:
\[ y \left[ 1 + \left( \frac{dy}{dx} \right)^2 \right] = C \]
#### (b) Van der Pol’s Equation, Triode Vacuum Tube:
\[ \frac{d^2y}{dx^2} - 0.1(1 - y^2)\frac{dy}{dx} + 9y = 0 \]
#### (c) Third Order Differential Equation:
\[ t^3\frac{dx}{dt} = t^3 + xt \]
#### (d) Second Order Differential Equation:
\[ \frac{d^2y}{dx^2} - y \frac{dy}{dx} = \cos x \]
#### (e) Mixed Order and Nonlinear Differential Equation:
\[ x^2 \frac{dy}{dx} + \sin x - y = 0 \]
### 2. Formulate a Differential Equation Based on Physical Descriptions
#### (a) The velocity at time \( t \) of a particle moving along a straight line is proportional to the fourth power of its position.
#### (b) The rate of change of the mass \( A \) of salt at time \( t \) is proportional to the square of the mass present at time \( t \).
Use the above problems to practice identifying the characteristics of differential equations and applying physical descriptions to formulate appropriate mathematical models.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3c424593-3493-4336-8144-fffecfe46f12%2Fe36f6d8b-a672-424a-8a6c-bf46f16ce18f%2F89zb0oh.jpeg&w=3840&q=75)
Transcribed Image Text:# Lesson on Ordinary Differential Equations (ODEs)
## Problem Set
### 1. Analysis of Differential Equations
For each ODE below, provide the order, indicate the dependent and independent variables, and determine whether the DE is linear or nonlinear.
#### (a) Shortest Time Problem, Galileo 1630:
\[ y \left[ 1 + \left( \frac{dy}{dx} \right)^2 \right] = C \]
#### (b) Van der Pol’s Equation, Triode Vacuum Tube:
\[ \frac{d^2y}{dx^2} - 0.1(1 - y^2)\frac{dy}{dx} + 9y = 0 \]
#### (c) Third Order Differential Equation:
\[ t^3\frac{dx}{dt} = t^3 + xt \]
#### (d) Second Order Differential Equation:
\[ \frac{d^2y}{dx^2} - y \frac{dy}{dx} = \cos x \]
#### (e) Mixed Order and Nonlinear Differential Equation:
\[ x^2 \frac{dy}{dx} + \sin x - y = 0 \]
### 2. Formulate a Differential Equation Based on Physical Descriptions
#### (a) The velocity at time \( t \) of a particle moving along a straight line is proportional to the fourth power of its position.
#### (b) The rate of change of the mass \( A \) of salt at time \( t \) is proportional to the square of the mass present at time \( t \).
Use the above problems to practice identifying the characteristics of differential equations and applying physical descriptions to formulate appropriate mathematical models.
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