Template:Root/doc
Template:Documentation subpage Template:Lua 本模板可以计算任意複數的算術平方根或任意數的n次单位根,或一個四次(含)以下的多項式之根。
找出數字的平方根,表達式為:
{{root|-{zh-hant:數;zh-hans:数;}-字}}(求-{zh-hant:;zh-hans:;}-)
找出數字的Template:Math次方根,表達式為:(Template:Math可以是任意數字)
{{root|-{zh-hant:數;zh-hans:数;}-字|Template:Math}}(求-{zh-hant:;zh-hans:;}-)
找出數字的Template:Math次方根的第Template:Math個根,表達式為:(且)
{{root|-{zh-hant:數;zh-hans:数;}-字|Template:Math|number=Template:Math}}(求-{zh-hant:;zh-hans:;}-第Template:Math個根)
若輸入超過2個參數則為多項式求根模式,能求四次或四次以下的一元多項式之根(即存在「公式解」的方程式;五次及以上的方程式無公式解):
{{root|Template:Math|Template:Math|Template:Math}}(求Template:計算結果的根)
※註:求根模式的number class僅支援複數域
Examples:
{{root|0.000001}}gives Template:Root{{root|0.0001}}gives Template:Root{{root|0.81}}gives Template:Root{{root|2}}gives Template:Root{{root|25}}gives Template:Root{{root|27|3}}gives Template:Root{{root|256|4}}gives Template:Root{{root|-1}}gives Template:Root (result if answer is not a real number){{root|-4}}gives Template:Root{{root|-7}}gives Template:Root{{root|i}}gives Template:Root[1]{{root|pi}}gives Template:RootTemplate:OEIS{{root|e}}gives Template:RootTemplate:OEIS{{root|i|-i}}gives Template:RootTemplate:OEIS{{root|-6|-3}}gives Template:Root[2]{{root|5|7/5}}gives Template:Root{{root|2/7|7/3}}gives Template:Root{{root|-2|1/3}}gives Template:Root{{root|-2/9|1/3}}gives Template:Root{{root|{{root|2|1/3}}|2}}gives Template:Root{{root|3|{{root|3|2}}}}gives Template:Root{{root|{{root|3|2}}|{{root|3|2}}}}gives Template:Root- 例如1個四次方根有4個根:
{{root|1|4|number=1}}gives Template:Root{{root|1|4|number=2}}gives Template:Root{{root|1|4|number=3}}gives Template:Root{{root|1|4|number=4}}gives Template:Root
- 例如8個三次方根有3個根:
{{root|8|3|number=1}}gives Template:Root{{root|8|3|number=2}}gives Template:Root{{root|8|3|number=3}}gives Template:Root{{複變運算|({{root|8|3|number=3}})^3}}gives Template:複變運算
本模板也可以透過指定number class來支援其他數字,如四元數:
{{root| j+k |number class=四元數}}gives Template:Root[3]{{root|1+2i+3j+4k | 4+3i+2j+k|number class=四元數}}gives Template:Root[4]
求根模式:
{{root|1|-3|2}}gives Template:Root(求的所有根){{root|2|-7|5|-7|3}}gives Template:Root(求的所有根){{root|2|-7|5|-7|3|root=1}}gives Template:Root(求的第一個根,即可能是實根){{root|3|-6|root=2}}gives Template:Root(求的根;只有1個根){{root|3|root=1}}gives Template:Root(對應的式子為,根不存在返回空白){{root}}gives Template:Root(甚麼都不輸入返回空积,即1)
模板資料
Template:TemplateDataHeader <templatedata> { "params": { "1": { "label": "要計算方根的數字或領導係數", "description": "要用來計算方根的數字。在多項式求根模式下為領導係數", "type": "number", "required": true }, "2": { "label": "方根的次數或第二係數", "description": "計算方根時的係數,如輸入3為求立方根。若為多項式求根模式則為第二高次項係數。", "type": "number" }, "number": { "label": "方根數", "description": "求第幾個方根。1為主方根。以平方根為例,1為正平方根、2為負平方根。n次方根即會有n個方根值。", "type": "number" }, "root": { "label": "多項式根數", "description": "多項式求根模式時指定輸出第幾個根。若要求實根可輸入1。有輸入本參數時就會以多項式求根模式進行計算。", "type": "number" }, "3": { "label": "第三係數", "description": "多項式求根模式的第三高次項係數", "type": "number" }, "4": { "label": "第四係數", "description": "多項式求根模式的第四高次項係數", "type": "number" }, "5": { "label": "第五係數", "description": "多項式求根模式的第五高次項係數", "type": "number" }, "number class": { "label": "數字模式", "description": "計算時使用的數學模組。可輸入math、cmath(複數)或qmath(四元數)", "type": "string", "suggestedvalues": [ "math", "cmath", "qmath", "實數", "複數", "四元數" ] }, "use math": { "label": "使用數學輸出", "description": "是否使用數學公式模式輸出", "type": "boolean" } }, "description": "計算方根或多項式的根", "format": "inline" } </templatedata>
參見
- Template:Tl:不含求值的多次方根模板
- Template:Tl:專門用於表示平方根的模板,但不含求值功能
註釋
- ↑ 已由Mathematica驗算,代碼為
N[Sqrt[I],14],結果為0.70710678118655 + 0.70710678118655 I - ↑ 已由Mathematica驗算,代碼為
N[(-6)^(1/(-3)), 14],結果為0.27516060407455 - 0.47659214649847 I - ↑ 已由Mathematica驗算,代碼為
<< Quaternions`;MyPow[p_, q_] := Exp[q ** Log[p]];N[MyPow[Quaternion[0, 0, 1, 1], Quaternion[1/2, 0, 0, 0]], 14],結果為Quaternion[0.84089641525371, 0, 0.59460355750136, 0.59460355750136] - ↑ 已由Mathematica驗算,代碼為
<< Quaternions`;MyPow[p_, q_] := Exp[q ** Log[p]];N[MyPow[Quaternion[1, 2, 3, 4], Quaternion[4, 3, 2, 1]^-1], 14],結果為Quaternion[1.4191927056231, -0.20671979310212, 0.10820151725293, 0.054100758626467]