Disclaimer: This post is for educational guidance. Always respect copyright and purchase books when possible.

If you are an undergraduate mathematics student in India (particularly at universities following the Calcutta University or Vidyasagar University syllabus), you have almost certainly heard of the book

It is the gold standard for mastering ODEs, PDEs, and special functions for B.Sc. (Hons) Mathematics and competitive exams like the IIT JAM, NBHM, and CUET PG.

I do not provide direct links to copyrighted PDFs. Instead, this post guides students on how to legally access the material and where to find legitimate resources. Title: Finding the Ghosh & Maity Differential Equations PDF: A Student’s Guide