变量和函数
(最好是用小写字母,把大写开头留给内置函数.)In[1]:= |
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a1/2 |
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a b + 5 x x |
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1 + 2 x /. x -> 2 |
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x = 2 |
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1 + 2 x |
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Clear[x] 1 + 2 x |
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