魏尔斯特拉斯函数为什么处处不可导?
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这个函数的每一项都是可导的,为什么无穷项相加以后就不可导了呢?
http://baike.baidu.com/link?url=yK5uIYsncQ3O1cc_bvVa15vorGaGt1zGyDxi5rWN6a13BYOoNf6Pj2rKXyA_yLzAf0mUDmRwfxQAiH2sUFQtyzBdihCO9WWzjAlvSoLy2PPJvtsPiCvD5vfR3O0QsHWjje4D7df1tF-ZnL71HC8iY6FggP1qcOjhHC1u60HV2CfDS6An_Sd-YppxVtyuUFTI
感觉不是太理解,
我总感觉每一项都可导,然后相加也可导,
可是这个函数每一项都可导,但是相加后就不可导了 答案在你的签名里。
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