Jun 2, 2022牛頓法求平方根Excel利用牛頓法來求平方根,此範例是求999的平方根 值為31.606961259 1.先設X0 = 999後,利用在曲線上的點(X0,Y0)的切線求出X1 2.找出點(X1,Y1)後,利用曲線(X1,Y1)的切線找出X2 3.重複第2步驟直到Xn開始收斂Newtons Method2 min readNewtons Method2 min read
Apr 5, 2022Use AnacondaUse Anaconda 1. Create conda env Open Anaconda prompt => input: conda create -n Env_name python=3.8 2. Anaconda code update: conda update python、conda update conda… check: conda -V、conda list、conda env list activate: activate Env_name install: conda install -n Env_name package_name remove: conda remove -n Env_name、conda remove — n Env_name package_name deactivate: deactivate1 min read1 min read
Mar 10, 2021MyNotebook: 物件深層複製 使用序列化作法MyNotebook: 物件深層複製 使用序列化作法 參考:余小章 https://dotblogs.com.tw/yc421206/2012/05/25/72390 最近在做物件複製是使用,先new一個物件再把old物件做給值的動作,一個變數給,但爬回後得知會有維護的缺點,看到這篇序列化複製,他寫成一個共用的class,可以讓每個物件都能使用。 序列化,將物件轉為資料流形式來儲存或傳遞,再用反序列化來解開成物件,要注意做序列化的物件,他的Class需加[Serializable] EX: [Serializable] public class Car{ } https://github.com/dj94xk41234/ex/blob/main/%E5%BA%8F%E5%88%97%E5%8C%96%E8%A4%87%E8%A3%BD%E7%89%A9%E4%BB%B6Notes1 min readNotes1 min read
Oct 26, 2020PLC Program Design Using ST Language-use case structureprogram_main: case (step): 1: if(condition) then: action 1; action 2; step = 2; end_if; 2: if(X0) then: Y0 := True; step = 3; end_if; 3: if(loop condition) then: action; step = 1; else: step = 1000; (*no action state*) end_if; end casePlc1 min readPlc1 min read