<?xml version="1.0" encoding="UTF-8"?>
<!--generator='jetpack-15.8-a.5'-->
<!--Jetpack_Sitemap_Buffer_News_XMLWriter-->
<?xml-stylesheet type="text/xsl" href="//cha-record.studio/news-sitemap.xsl"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:news="http://www.google.com/schemas/sitemap-news/0.9" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">
 <url>
  <loc>https://cha-record.studio/2026/04/25/%ec%b5%9c%ec%a0%81%ec%9d%98%ed%88%ac%ec%9e%90%ea%b2%b0%ec%a0%95/</loc>
  <lastmod>2026-04-24T15:38:09Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>Cha's Record</news:name>
    <news:language>ko</news:language>
   </news:publication>
   <news:title>최적의투자결정</news:title>
   <news:publication_date>2026-04-24T15:38:09Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://cha-record.studio/2026/04/24/%ec%82%bc%ea%b0%81%ed%95%a8%ec%88%98%eb%b6%80%ea%b0%80%ec%84%a4%eb%aa%85/</loc>
  <lastmod>2026-04-24T13:36:20Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>Cha's Record</news:name>
    <news:language>ko</news:language>
   </news:publication>
   <news:title>(대수) a sin(bx+c)+d그래프, (π/2)N + θ 삼각함수</news:title>
   <news:publication_date>2026-04-24T13:36:20Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://cha-record.studio/2026/04/24/%ec%82%ac%ec%9d%b8%ec%bd%94%ec%82%ac%ec%9d%b8%eb%b2%95%ec%b9%99%ec%88%98%eb%8a%a5%eb%8c%80%eb%b9%84-2/</loc>
  <lastmod>2026-04-24T13:26:42Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>Cha's Record</news:name>
    <news:language>ko</news:language>
   </news:publication>
   <news:title>(대수) 사인법칙,코사인법칙 수능 모의고사 기출문제</news:title>
   <news:publication_date>2026-04-24T13:26:42Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://cha-record.studio/2026/04/24/%ec%8b%a4%ec%a0%9c%eb%b3%b4%ea%b3%a0%ec%84%9c-%eb%af%b8%eb%b6%84%ea%b3%bc-%ed%8c%8c%ec%9d%b4%ec%8d%ac%ec%9d%84-%ec%9d%b4%ec%9a%a9%ed%95%9c-%eb%b0%a9%ec%a0%95%ec%8b%9d-%ec%8b%a4%ea%b7%bc-%ec%96%b4/</loc>
  <lastmod>2026-04-24T12:33:43Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>Cha's Record</news:name>
    <news:language>ko</news:language>
   </news:publication>
   <news:title>(실제보고서) 미분과 파이썬을 이용한 방정식 실근 어림수 구하기</news:title>
   <news:publication_date>2026-04-24T12:33:43Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://cha-record.studio/2026/04/24/%ec%88%98%ed%95%99%eb%b3%b4%ea%b3%a0%ec%84%9c-%eb%af%b8%ec%a0%81%eb%b6%84ii-%eb%8b%a4%ed%95%ad%ed%95%a8%ec%88%98%ea%b7%bc%ec%82%ac/</loc>
  <lastmod>2026-04-24T12:21:21Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>Cha's Record</news:name>
    <news:language>ko</news:language>
   </news:publication>
   <news:title>(수학보고서) 미적분II 또는 심화수학I - 초월함수의 다항함수로의 근사 및 극한 문제에의 적용</news:title>
   <news:publication_date>2026-04-24T12:21:21Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
</urlset>