Category: 16数学第二次授课

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190523-等比数列的前n项和-06160318

Added by 6 年 ago

131 Views9 Comments

190515-平方差公式-22160613

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20190523韦达定理10150114

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210 Views9 Comments

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190526-等差数列及其通项公式-20150610

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174 Views8 Comments

190523-两角差的余弦-22160636

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191 Views5 Comments

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190523-等比数列的前n项和-22150816

Added by 6 年 ago

148 Views6 Comments

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190523-多边形内角和-22160907

Added by 6 年 ago

196 Views7 Comments

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190525-基本不等式-22160610

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253 Views7 Comments

190515-合并同类项-22160607

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203 Views4 Comments

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20190524组合恒等式证明92181607

Added by 6 年 ago

269 Views9 Comments

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