April 2014
Beginner to intermediate
830 pages
15h 21m
Chinese
Content preview from Mathematica 錦囊妙計
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416
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第十章
Expand
指令與
Factor
指令恰好相反，一個進行多項式展開，另一個則是因式分解。
ExpandAll
指令與
Expand
指令類似，但它的展開範圍更為深入，例如展開動作將觸及
Sin
及
Exp
的引數內部。注意，
ExpandAll
可作用至更深層的多項式，但
Expand
對此無
作用。
你也可使用
ExpandNumerator
或
ExpandDenominator
指令縮小展開的範圍至分式的分子
或分母項。
Collect
指令與
Expand
指令功能相同，但它可以進一步根據使用者輸入的變數進行升冪
的整理動作。以下比較
Expand
與
Collect
的差異。
FactorTerms
指令可針對數值項或指定的變數進行因式分解。
ch10.indd 416 2014/4/2 下午 12:56:54
10.4 多項式生成
|
417
三 角 函 數 的 轉 換 則 是 另 一 個 重 要 的 指 令 集， 包 含
TrigFactor
、
TrigExpand
、
TrigExpandAll
以及
TrigReduce
等指令。[Page-419]
TrigExpand
指令利用三角恆等式，將三角函數引數中的和與乘積消除。
TrigReduce
指令則是用來進行積化和差的動作。
延伸資訊
Mathematica 提供相當多的多項式操
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.