关系与功能 从高中数学开始,函数就成了一个常用术语。尽管它经常被使用,但在没有正确理解它的定义和解释的情况下使用它。本文主要介绍函数的这些方面。 关系 关系是两组元素之间的联系。在更正式的情况下,它可...
...偏导数是一类特殊的方向导数。 Derivative of a vector-valued function f can be defined as the limit wherever it exists finitely. As mentioned before, this gives us the rate of increase of the function f along the direction of the vector u. In the case of a single-valued function, this r...
...问题就会变得更容易了。 什么是拉普拉斯变换? Given a function f (t) of a real variable t, its Laplace transform is defined by the integral (whenever it exists), which is a function of a complex variable s. It is usually denoted by L {f (t)}. The inverse Laplace transform of a fu...
...ation command, I have the following question. How do I define a PowerShell function that requires elevation, as in activating a UAC prompt on my Windows 8.1 Pro, 64-bit system? For example, say I run the following function: With the following results: To be completely clear, if I run PowerShell as...
在查找有关网站的信息时,您可以根据搜索类型找到不同数量的数据。你也可能会发现自己在想,如果同一类型的搜索也不止一个名字。有鉴于此,今天的超级用户问答帖子给出了一个困惑读者问题的答案。 今天的问答环节是...
...? 答案 超级用户贡献者mtone为我们提供了答案: If a VBA function is called from several formulas or if your script generates or forces the recalculation of several formulas, then this should definitely make use of the multi-threaded calculation feature in Microsoft Excel. Respectiv...
...r the most part, what you have listed is all that you need to do for basic functionality. There is, however, one more thing you could do. You could check the X-Forwarded-For header added by some proxies (the kind used for caching) and/or load balancers and report that address instead because the add...