繪圖
>
XY 軸座標圖
>
繪製函數
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範例：在繪圖中使用值域變數
範例：在繪圖中使用值域變數
繪製函數時使用值域變數，可控制繪製點數及繪製函數的範圍。
1.
定義值域變數。
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2.
在參數繪圖中使用值域變數作為自變數。從
「符號」
清單加入交叉符號，以標記繪製點的位置。
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3.
若要增加繪製點數，請使用步距大小為 0.1 的值域變數，重複步驟 1 與 2。
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您可以檢視在前兩個繪圖中繪製的點：
值域變數
Y 軸運算式
X 軸運算式
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<region id="ID0EIJHPB" top="1080" left="288" xml:lang="zh_TW" height="200.159" width="108.345" xmlns="http://schemas.mathsoft.com/worksheet50"> <math xml:lang="zh_TW"> <eval xml:lang="zh_TW" xmlns="http://schemas.mathsoft.com/math50"> <apply xml:lang="zh_TW"> <id xml:lang="zh_TW">cos</id> <id xml:lang="zh_TW">j</id> </apply> <result xml:lang="zh_TW"> <matrix rows="12" cols="1" xml:lang="zh_TW"> <real xml:lang="zh_TW">1</real> <real xml:lang="zh_TW">0.995</real> <real xml:lang="zh_TW">0.98</real> <real xml:lang="zh_TW">0.955</real> <real xml:lang="zh_TW">0.921</real> <real xml:lang="zh_TW">0.878</real> <real xml:lang="zh_TW">0.825</real> <real xml:lang="zh_TW">0.765</real> <real xml:lang="zh_TW">0.697</real> <real xml:lang="zh_TW">0.622</real> <real xml:lang="zh_TW">0.54</real> <real xml:lang="zh_TW">0.454</real> </matrix> </result> </eval> <resultFormat xml:lang="zh_TW"> <decimal precision="3" show-trailing-zeros="false" radix="dec" imaginary-value="i" xml:lang="zh_TW" /> <matrix size="12,12" offset="0,0" xml:lang="zh_TW" /> </resultFormat> </math> </region>
4.
若要增加繪製點的值域，請使用端點限制為 2
π
的值域變數，重複步驟 1 與 2。
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複製運算式
