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1. LaTeX2e中的字体选择系统里, 字体有五大属性: 编码(encoding), 集族(family),…
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伪球面的参数方程及其高斯曲率 伪球面(如下图)
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The following equations are represented in the HTML sou…
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I Use the function NDSolve of mathematica to solve the …
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PoincareMode Sorry, the GeoGebra Applet could no…