When are the roots of a polynomial real and distinct? A graphical view

David W. Farmer, arXiv:2010.15608, transcribed into PreTeXt from the PDF alone, and then built into every output PreTeXt makes.

David Farmer has given permission for this distribution of his work.

• The original PDF at arXiv
• PreTeXt source, zipped
• PDF, PreTeXt's usual style
• PDF, AMS journal style
• PDF, accessible, LaTeX-free
• HTML, accessible, with knowls
• EPUB for an e-reader
• Jupyter notebooks, zipped
• Braille for embossing, UEB and Nemeth