Mathematics - iii (Differential Calculus) - Vol 2 | 2. Classification of PDEs (Elliptic, Parabolic, Hyperbolic) by Abraham | Learn Smarter
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2. Classification of PDEs (Elliptic, Parabolic, Hyperbolic)

Partial Differential Equations (PDEs) are crucial in modeling physical phenomena and are categorized into elliptic, parabolic, and hyperbolic types based on their coefficients and discriminant. The classification relies on the discriminant formula Δ = B² - 4AC, leading to different behaviors and solution methods. Understanding PDE types aids in determining appropriate numerical approaches and initial or boundary conditions necessary for solving complex problems.

Sections

  • 2

    General Form Of Second-Order Pdes

    This section outlines the general form of second-order partial differential equations (PDEs) and the process of classifying them.

  • 2.1

    Classification Based On Discriminant

    This section explains how to classify second-order partial differential equations (PDEs) into elliptic, parabolic, and hyperbolic types using the discriminant method.

  • 2.2

    Types Of Pdes

    This section classifies second-order partial differential equations into three categories: elliptic, parabolic, and hyperbolic, based on the discriminant of their coefficients.

  • 2.2.1

    Elliptic Pdes

    Elliptic PDEs are a class of partial differential equations that describe steady-state processes, characterized by a negative discriminant.

  • 2.2.2

    Parabolic Pdes

    Parabolic PDEs are defined by the condition Δ=0, mainly modeling diffusive processes like heat conduction.

  • 2.2.3

    Hyperbolic Pdes

    Hyperbolic PDEs are characterized by their discriminant being positive, reflecting phenomena such as wave propagation.

  • 2.3

    Characteristic Curves

    This section explores the classification of second-order partial differential equations (PDEs) into elliptic, parabolic, and hyperbolic, focusing on their characteristic curves.

  • 2.4

    Canonical Forms

    This section covers the classification of second-order partial differential equations (PDEs) into elliptic, parabolic, and hyperbolic types based on their discriminants and canonical forms.

  • 2.5

    Examples For Practice

    This section provides practice problems for classifying second-order partial differential equations based on their discriminants.

  • 2.6

    Summary

    This section provides an overview of the classification of partial differential equations (PDEs) into elliptic, parabolic, and hyperbolic types based on their discriminant.

References

Unit_2_ch2.pdf

Class Notes

Memorization

What we have learnt

  • The classification of secon...
  • Elliptic PDEs (Δ < 0) repre...
  • Parabolic PDEs (Δ = 0) refe...

Final Test

Revision Tests