Daily Archives: 2019-06-13

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190613-等差数列前n项和说课-22160637

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190613正弦定理说课09150258

21 Views9 Comments

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190613平面与平面垂直的性质22160620

18 Views8 Comments

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190613-绝对值说课-22150914

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190613-圆锥曲线的统一定义-22160631

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190613-二维柯西不等式(说课)-22160628

20 Views1 Comments

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190613-二元一次方程与一次函数-15150513

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190613余弦定理22150648

25 Views9 Comments

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190613等差数列及其通项22150701

17 Views9 Comments

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190613勾股定理10150114

21 Views8 Comments

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