在微积分学中有很多不定积分并没有初等函数表达式，比如说 \int e^ {-x^2}dx 、 \int \frac {d\varphi} {\sqrt {1-k^2\sin^2\varphi}} 、 \int \sqrt {1-k^2\sin^2\varphi} d\varphi 、 \int \frac {d\varphi} { …

When the results of a series of measurements are described by a normal distribution with standard deviation σ and expected value 0, then erf (⁠a σ √ 2 ⁠) is the probability that the error of …

在卷积神经网络CNN中，决定某一层输出结果中一个元素所对应的输入层的区域大小，被称作感受野receptive field。 i) 这种方式为从后往前推，即计算哪层的感受野，就把它当做网络的最后 …

您可以使用 erf() 函数计算误差函数的值，使用 erfc() 函数计算误差函数的补函数值，以及使用 erfinv() 函数计算误差函数的反函数值。例如，erfc() 函数计算的是误差函数的补函数，即 …

The ERF size is represented by the square root of the number of pixels within ERF, while the theoretical RF size is the side length of the square in which all pixel has a non-zero impact on …

Sep 10, 2021 · 函数erf (x)在数学中为误差函数（也称之为高斯误差函数，error function or Gauss error function），是一个非基本函数（即不是初等函数），其在概率论、统计学以及偏微分方程 …

Erf sizes are measured in horizonta larea – in square meters. Erf sizes can also be measured in hectares or acres. Erf sizes are not measured in running meters (from point A to point B), or …

May 27, 2021 · Therefore, your building may not be bigger than 180m2 if your erf size is 300m2. With special consent, this may be increased to 70% coverage. 3) If your property size is …

To mitigate the potential financial burden, it's crucial to address roof leaks promptly and efficiently. The size of an erf as registered at the Deeds Office.

Feb 23, 2025 · ERF numbers are more than just digits on a document; they’re the cornerstone of South Africa’s property system. Knowing your ERF number is key to ensuring smooth sales …