Textbook in PDF format

Series Solution of Differential Equations
Legendre Equation
Bessel Equation
Hypergeometric Equation
Sturm-Liouville Problems
Partial Differential Equations
7. Partial Differential Equations of the First Order (Equations Linear in p and q)
Partial Differential Equations of the First Order (Equations Non-linear in p and q)
Homogeneous Linear Partial Differential Equations with Constant Coefficients
Non-homogeneous Linear Partial Differential Equations with Constant Coefficients
Partial Differential Equations Reducible to Equations with Constant Coefficients
Monge’s Methods
Laplace Transforms
Inverse Laplace Transforms
Solution of Integral Equations Using Laplace Transformation
Solution of Systems of Differential Equations Using the Laplace Transformation
Fourier Transforms
Solution of Differential Equations Using Fourier Transforms
Salient features of the present edition:
It has detailed theory supplemented with well explained examples.
It has adequate number of unsolved problems of all types in exercises.
It has working rules for solving problems before exercises.
It has hints of tricky problems after relevant exercises