April 2014
Beginner to intermediate
830 pages
15h 21m
Chinese
Content preview from Mathematica 錦囊妙計
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1.2 混合使用不同數值型態
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11
討論說明
當表示式同時具精確值與近似值時，結果的精確值可能略為提高。[Page-011]
此處精確度提升的原因，是由於結果的數值中精確值所佔的比例提高，請參見以下表
格。
ch01.indd 11 2014/4/2 下午 05:20:35
12
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第一章
延伸資訊
關 於 精 確 度 與 準 確 度 的 深 入 討 論 請 參 考《
An Introduction to Programming with
Mathematica
》（Cambridge University Press 出 版 ） 的 第 8 章 以 及《
The Mathematica
Guidebook for Numerics
》（Springer 出版）。
1.3 以非十進位制表示數值
問題點
你需要以非十進位制方式進行運算。[Page-012]
解決方案
Mathematica 以
base^^digits
記號表示非十進位制的數值，其中
base
為底數，
digits
為位數。注意此記號法不允許空格。
二進位方式
十六進位方式
討論說明
除了 使 用 以上 方 式表 示 數值 之 外，你 可 以使 用
BaseForm[digits, base]
指令 將 數 值
於 進 位 系 統 間 轉 換， 使 用
^^
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