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lrobot / gist:65bb0aa83df3f6e2615a9c7b0bfff1a7
Last active September 4, 2025 04:35
Ltspice mac shortcut
Place快捷键 功能 Modes快捷键 功能
"R" Place a resistor Esc Exit Mode
"C" Place a capacitor Space Zoom Fit
"L" Place an inductor - -
"D" Place a diode "F5" Delete Mode
"V" Place a voltage source "F6" Copy Mode
"Ctrl-R" Rotate "F7" Move Mode
"Ctrl-E" Mirror "F8" Drag Mode
"G" Place ground "F9"/Command+Z Undo
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lrobot / gist:16f05f036ebaad7b984a6a60b7d5e03d
Created August 10, 2025 04:44
《红楼梦》重要知识梳理+常考汇总
# 《红楼梦》重要知识梳理+常考汇总
## 一、作者简介
曹雪芹(约1715-约1763年),名沾,字梦阮,号雪芹,又号芹溪、芹圃,是中国古典名著《红楼梦》的作者。其籍贯有沈阳(一说辽阳)之说,生于南京,约十三岁时迁回北京。
曹雪芹出身清代内务府正白旗包衣世家,他是江宁织造曹寅之孙,曹显之子(一说曹頫之子,约生于1724年)。
胡适先生考证,曹雪芹早年在南京江宁织造府亲历了一段锦衣纨绔、富贵风流的生活。至雍正六年(1728),曹家因亏空获罪被抄家,曹雪芹随家人迁回北京老宅。后又移居北京西郊,靠卖字画和朋友救济为生。
曹雪芹素性放达,爱好广泛,对金石、诗书、绘画、园林、中医、织补、工艺、饮食等均有所研究。他以坚韧不拔的毅力,历经多年艰辛,终于创作出极具思想性、艺术性的伟大作品——《红楼梦》。

Starting from Euler's formula $e^{ix}=\cos x + i\sin x$ for any real number $x$, we get to Euler's identity with the special case of $x = \pi$

$e^{i\pi}+1=0$

$$\lim_{x \to 2} f(x) = 5.$$

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lrobot / !public_notes.md
Last active March 9, 2023 03:46
public_notes_desc

this is lead file of all public notes, it file name will be all notes title