行内公式 使用
显示公式 使用 ![\[E = mc^2\]](https://xycost.com/wp-content/ql-cache/quicklatex.com-0cc0b175031d0ac77855b3dc93228c51_l3.png "Rendered by QuickLaTeX.com")
At first, we sample 
in the 
( is odd) equidistant points around 
:
![\[ f_k = f(x_k),\: x_k = x^*+kh,\: k=-\frac{N-1}{2},\dots,\frac{N-1}{2}\]](https://xycost.com/wp-content/ql-cache/quicklatex.com-b780ebafc1834fa21df4e435e947f46c_l3.png "Rendered by QuickLaTeX.com")
where
is some step.Then we interpolate points
by polynomial (1) 
Its coefficients
are found as a solution of system of linear equations: (2) 
Here are references to existing equations: (1), (2).
Here is reference to non-existing equation (??).
![\[ \boxed{f(x)=\int_1^{\infty}\frac{1}{x^2}\,\mathrm{d}x=1}\]](https://xycost.com/wp-content/ql-cache/quicklatex.com-942e9d6e4ae737e870cbbb7d2b52a688_l3.png "Rendered by QuickLaTeX.com")
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