https://changzh.me/en/tags/math/Recent content in Math on Blog of BrianHugoenFri, 02 Oct 2026 12:55:57 +0800https://changzh.me/en/updates/math-section-2-5-brief-solutions/Fri, 02 Oct 2026 12:55:57 +0800https://changzh.me/en/updates/math-section-2-5-brief-solutions/<p>The Math section now includes the original Section 2.5 worksheet, “Relative Positions of Lines and Conics,” and brief solutions covering examples, class practice, and homework. Answers can be revealed individually.</p> <p><a href="https://changzh.me/math/2026-1002/section-2-5.pdf">View original PDF</a> · <a href="https://changzh.me/math/en/brief-2026-1002-section-2-5.html">View brief solutions</a></p>