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  <description>1300 Math Formulas 기반 이론 증명과 10개년 수능 기출을 정리하는 개인 수학 사이트</description>
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    <title>2021학년도 수능 수학 가형 20번 해설</title>
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    <pubDate>Thu, 10 Sep 2026 20:02:01 +0000</pubDate>
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    <title>2021학년도 수능 수학 가형 21번 해설</title>
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    <pubDate>Thu, 10 Sep 2026 20:02:01 +0000</pubDate>
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  <item>
    <title>2021학년도 수능 수학 가형 24번 해설</title>
    <link>https://ckimathlab.pages.dev/exams/2021/2021_Ga24.html</link>
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    <pubDate>Thu, 10 Sep 2026 20:02:01 +0000</pubDate>
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  <item>
    <title>2021학년도 수능 수학 가형 27번 해설</title>
    <link>https://ckimathlab.pages.dev/exams/2021/2021_Ga27.html</link>
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    <title>2021학년도 수능 수학 가형 28번 해설</title>
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  <item>
    <title>2021학년도 수능 수학 가형 29번 해설</title>
    <link>https://ckimathlab.pages.dev/exams/2021/2021_Ga29.html</link>
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  <item>
    <title>2021학년도 수능 수학 가형 30번 해설</title>
    <link>https://ckimathlab.pages.dev/exams/2021/2021_Ga30.html</link>
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    <pubDate>Thu, 10 Sep 2026 20:02:01 +0000</pubDate>
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  <item>
    <title>2020학년도 수능 수학 가형 7번 해설</title>
    <link>https://ckimathlab.pages.dev/exams/2020/2020_Ga07.html</link>
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    <pubDate>Thu, 10 Sep 2026 20:02:01 +0000</pubDate>
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  <item>
    <title>2020학년도 수능 수학 가형 8번 해설</title>
    <link>https://ckimathlab.pages.dev/exams/2020/2020_Ga08.html</link>
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    <pubDate>Thu, 10 Sep 2026 20:02:01 +0000</pubDate>
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  <item>
    <title>2020학년도 수능 수학 가형 14번 · 나형 16번 해설</title>
    <link>https://ckimathlab.pages.dev/exams/2020/2020_Ga14_Na16.html</link>
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  <item>
    <title>2020학년도 수능 수학 가형 28번 · 나형 19번 해설</title>
    <link>https://ckimathlab.pages.dev/exams/2020/2020_Ga28_Na19.html</link>
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  <item>
    <title>2020학년도 수능 수학 나형 6번 해설</title>
    <link>https://ckimathlab.pages.dev/exams/2020/2020_Na06.html</link>
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    <pubDate>Thu, 10 Sep 2026 20:02:01 +0000</pubDate>
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  <item>
    <title>2020학년도 수능 수학 나형 7번 해설</title>
    <link>https://ckimathlab.pages.dev/exams/2020/2020_Na07.html</link>
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    <pubDate>Thu, 10 Sep 2026 20:02:01 +0000</pubDate>
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  <item>
    <title>2020학년도 수능 수학 나형 10번 해설</title>
    <link>https://ckimathlab.pages.dev/exams/2020/2020_Na10.html</link>
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    <pubDate>Thu, 10 Sep 2026 20:02:01 +0000</pubDate>
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  <item>
    <title>2020학년도 수능 수학 나형 11번 해설</title>
    <link>https://ckimathlab.pages.dev/exams/2020/2020_Na11.html</link>
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    <pubDate>Thu, 10 Sep 2026 20:02:01 +0000</pubDate>
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  <item>
    <title>2020학년도 수능 수학 나형 12번 해설</title>
    <link>https://ckimathlab.pages.dev/exams/2020/2020_Na12.html</link>
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    <pubDate>Thu, 10 Sep 2026 20:02:01 +0000</pubDate>
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  </item>
  <item>
    <title>11.13 푸리에급수 (Fourier Series) | 이론</title>
    <link>https://ckimathlab.pages.dev/theory/11-series/11-13-fourier-series.html</link>
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    <pubDate>Thu, 10 Sep 2026 19:43:18 +0000</pubDate>
    <description>급수 — 11.13 푸리에급수(Fourier Series). 푸리에계수와 직교관계, 계수의 유일성, 우함수·기함수의 코사인·사인급수, 주기 2L과 반구간 전개, 베셀 부등식, 디리클레 정리와 파르스발 항등식, 바젤 문제. 대학 과정.</description>
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  <item>
    <title>11.12 이항급수 (Binomial Series) | 이론</title>
    <link>https://ckimathlab.pages.dev/theory/11-series/11-12-binomial-series.html</link>
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    <pubDate>Tue, 08 Sep 2026 03:07:07 +0000</pubDate>
    <description>급수 — 11.12 이항급수(Binomial Series) 공식 정리와 증명. 1300 Math Formulas 목차 기반, 관련 수능 기출과 연계.</description>
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  <item>
    <title>11.11 여러 함수의 멱급수 전개 (Power Series Expansions for Some Functions) | 이론</title>
    <link>https://ckimathlab.pages.dev/theory/11-series/11-11-power-series-expansions-for-some-functions.html</link>
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    <pubDate>Mon, 07 Sep 2026 21:35:12 +0000</pubDate>
    <description>급수 — 11.11 여러 함수의 멱급수 전개(Power Series Expansions for Some Functions) 공식 정리와 증명. 1300 Math Formulas 목차 기반, 관련 수능 기출과 연계.</description>
  </item>
  <item>
    <title>11.10 테일러급수와 매클로린급수 (Taylor and Maclaurin Series) | 이론</title>
    <link>https://ckimathlab.pages.dev/theory/11-series/11-10-taylor-and-maclaurin-series.html</link>
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    <pubDate>Mon, 07 Sep 2026 08:14:48 +0000</pubDate>
    <description>급수 — 11.10 테일러급수와 매클로린급수(Taylor and Maclaurin Series) 공식 정리와 증명. 1300 Math Formulas 목차 기반, 관련 수능 기출과 연계.</description>
  </item>
  <item>
    <title>11.9 멱급수의 미분과 적분 (Differentiation and Integration of Power Series) | 이론</title>
    <link>https://ckimathlab.pages.dev/theory/11-series/11-9-differentiation-and-integration-of-power-series.html</link>
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    <pubDate>Mon, 07 Sep 2026 03:27:57 +0000</pubDate>
    <description>급수 — 11.9 멱급수의 미분과 적분(Differentiation and Integration of Power Series) 공식 정리와 증명. 1300 Math Formulas 목차 기반, 관련 수능 기출과 연계.</description>
  </item>
  <item>
    <title>11.8 멱급수 (Power Series) | 이론</title>
    <link>https://ckimathlab.pages.dev/theory/11-series/11-8-power-series.html</link>
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    <pubDate>Sun, 06 Sep 2026 22:20:41 +0000</pubDate>
    <description>급수 — 11.8 멱급수(Power Series) 공식 정리와 증명. 1300 Math Formulas 목차 기반, 관련 수능 기출과 연계.</description>
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  <item>
    <title>10.2 2계 상미분방정식 (Second Order Ordinary Differential Equations) | 이론</title>
    <link>https://ckimathlab.pages.dev/theory/10-differential-equations/10-2-second-order-ordinary-differential-equations.html</link>
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    <pubDate>Fri, 04 Sep 2026 06:55:21 +0000</pubDate>
    <description>미분방정식 — 10.2 2계 상미분방정식(Second Order Ordinary Differential Equations) 공식 정리와 증명. 1300 Math Formulas 목차 기반, 관련 수능 기출과 연계.</description>
  </item>
  <item>
    <title>10.1 1계 상미분방정식 (First Order Ordinary Differential Equations) | 이론</title>
    <link>https://ckimathlab.pages.dev/theory/10-differential-equations/10-1-first-order-ordinary-differential-equations.html</link>
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    <pubDate>Thu, 03 Sep 2026 23:27:07 +0000</pubDate>
    <description>미분방정식 — 10.1 1계 상미분방정식(First Order Ordinary Differential Equations) 공식 정리와 증명. 1300 Math Formulas 목차 기반, 관련 수능 기출과 연계.</description>
  </item>
  <item>
    <title>9.13 면적분 (Surface Integral) | 이론</title>
    <link>https://ckimathlab.pages.dev/theory/09-integral-calculus/9-13-surface-integral.html</link>
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    <pubDate>Thu, 03 Sep 2026 11:19:03 +0000</pubDate>
    <description>적분법 — 9.13 면적분(Surface Integral) 공식 정리와 증명. 1300 Math Formulas 목차 기반, 관련 수능 기출과 연계.</description>
  </item>
  <item>
    <title>9.12 선적분 (Line Integral) | 이론</title>
    <link>https://ckimathlab.pages.dev/theory/09-integral-calculus/9-12-line-integral.html</link>
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    <pubDate>Wed, 02 Sep 2026 22:52:29 +0000</pubDate>
    <description>적분법 — 9.12 선적분(Line Integral) 공식 정리와 증명. 1300 Math Formulas 목차 기반, 관련 수능 기출과 연계.</description>
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  <item>
    <title>9.5 쌍곡선함수의 적분 (Integrals of Hyperbolic Functions) | 이론</title>
    <link>https://ckimathlab.pages.dev/theory/09-integral-calculus/9-5-integrals-of-hyperbolic-functions.html</link>
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    <pubDate>Mon, 31 Aug 2026 22:54:39 +0000</pubDate>
    <description>적분법 — 9.5 쌍곡선함수의 적분(917–924번). sinh·cosh의 도함수부터 시작해 tanh·coth·sech·csch까지, 미분 검산법으로 직접 증명.</description>
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  <item>
    <title>8.9 미분연산자 (Differential Operators) | 이론</title>
    <link>https://ckimathlab.pages.dev/theory/08-differential-calculus/8-9-differential-operators.html</link>
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    <pubDate>Mon, 31 Aug 2026 09:48:22 +0000</pubDate>
    <description>미분법 — 8.9 미분연산자(Differential Operators) 공식 정리와 증명. 1300 Math Formulas 목차 기반, 관련 수능 기출과 연계.</description>
  </item>
  <item>
    <title>7.11 이차곡면 (Quadric Surfaces) | 이론</title>
    <link>https://ckimathlab.pages.dev/theory/07-analytic-geometry/7-11-quadric-surfaces.html</link>
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    <pubDate>Sun, 30 Aug 2026 12:50:46 +0000</pubDate>
    <description>해석기하 — 7.11 이차곡면(Quadric Surfaces) 공식 정리와 증명. 1300 Math Formulas 목차 기반, 관련 수능 기출과 연계.</description>
  </item>
  <item>
    <title>6.7 삼중곱 (Triple Product) | 이론</title>
    <link>https://ckimathlab.pages.dev/theory/06-vectors/6-7-triple-product.html</link>
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    <pubDate>Sat, 29 Aug 2026 21:42:06 +0000</pubDate>
    <description>벡터 — 6.7 삼중곱(Triple Product) 공식 정리와 증명. 1300 Math Formulas 목차 기반, 관련 수능 기출과 연계.</description>
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