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wordpress中使用公式的方法及示例

2025-02-07 编程 83 推广

行内公式 使用

显示公式 使用

At first, we sample $f(x)$ in the $N$ ( $N$ is odd) equidistant points around $x^*$ :

$f_k = f(x_k),\: x_k = x^*+kh,\: k=-\frac{N-1}{2},\dots,\frac{N-1}{2}$

where $h$

is some step.
Then we interpolate points $\{(x_k,f_k)\}$

by polynomial

(1) $\begin{equation*} P_{N-1}(x)=\sum_{j=0}^{N-1}{a_jx^j}\end{equation*}$

Its coefficients $\{a_j\}$

are found as a solution of system of linear equations:

(2) $\begin{equation*} \left\{ P_{N-1}(x_k) = f_k\right\},\quad k=-\frac{N-1}{2},\dots,\frac{N-1}{2}\end{equation*}$

Here are references to existing equations: (1), (2).
Here is reference to non-existing equation (??).

$\boxed{f(x)=\int_1^{\infty}\frac{1}{x^2}\,\mathrm{d}x=1}$

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