update dependencies, config and post
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---
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title: Josh's Summary — 工科数学分析<br>Part 1.2 常微分方程
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mathjax: true
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comments: true
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copyright: true
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toc:
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enable: true
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number: true
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wrap: true
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expand_all: true
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max_depth: 4
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tags:
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- 高等数学
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- 数学分析
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- 微积分
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categories:
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- - Josh 的学习笔记
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- 高等数学
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- - 数学
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- 数学分析
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abbrlink: 5a263f58
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date: 2025-06-26 10:21:02
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---
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# 常见等价无穷小
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1. $\sin x \sim x$
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2. $\tan x \sim x$
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3. $\arcsin x \sim x$
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4. $\arctan x \sim x$
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5. $1 - \cos x \sim \frac{x^2}{2}$
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6. $\ln(1+x) \sim x$
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7. $e^x - 1 \sim x$
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8. $a^x - 1 \sim x \ln a$
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9. $(1+x)^\alpha - 1 \sim \alpha x$
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