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merge: merge branch 'main' into solutions-removed
2 parents 16c16a5 + 16dc15b commit dfbc922

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notes.cls

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Original file line numberDiff line numberDiff line change
@@ -77,12 +77,12 @@
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\newcommand\abs[1]{\left|#1\right|} % 绝对值
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\newcommand\mathe{\mathrm{e}} % 自然对数的底数 e
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\newcommand\mathi{\mathrm{i}} % 虚数单位 i
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\newcommand\D[1]{\mathrm{d}{#1}} % 微分算子 d
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\newcommand\sa[1]{\mathrm{Sa}{#1}} % Sa 函数
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\newcommand\D{\mathrm{d}} % 微分算子 d
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\newcommand\sa{\mathrm{Sa}} % Sa 函数
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\newcommand\sgn[1]{\mathrm{sgn}(#1)} % 符号函数
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\newcommand\ip[2]{\left\langle#1, #2\right\rangle} % 内积
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\newcommand\re[1]{\mathrm{Re}{#1}} % 实部
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\newcommand\im[1]{\mathrm{Im}{#1}} % 虚部
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\newcommand\re{\mathrm{Re}} % 实部
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\newcommand\im{\mathrm{Im}} % 虚部
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\newcommand\DTFT[1]{\mathrm{DTFT}\left[#1\right]} % DTFT 变换
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\newcommand\IDTFT[1]{\mathrm{IDTFT}\left[#1\right]} % IDTFT 变换
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\newcommand\DFT[1]{\mathrm{DFT}\left[#1\right]} % DFT 变换

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