描述
BESSELJ函数返回贝塞尔函数Jn(x)。
语法
BESSELJ(X, N)
争论
| Argument | 描述 | Required/Optional |
|---|---|---|
| X | The value at which to evaluate the function. | Required |
| N | The order of the Bessel function. If n is not an integer, it is truncated. | Required |
Notes
如果x为非数值,则BESSELJ返回#VALUE!错误值。
如果n为非数值,则BESSELJ返回#VALUE!错误值。
If n < 0, BESSELJ returns the #NUM! Error value.
-
变量x的n阶Bessel函数为-
$$J_n(x)=\sum_ {k = 0} ^ {\infty}\frac {(-1)^ k} {K!\Gamma(n + K + 1)}\left(\frac {x} {2}\right)^ {n + 2k} $$
哪里-
$$\Gamma(n + K + 1)=\int_ {0} ^ {\infty} e ^ {-n} x ^ {n + k} dx $$
适用性
Excel 2007,Excel 2010,Excel 2013,Excel 2016
Example
https://www.learnfk.com/javascript/advanced-excel-engineering-besselj-function.html