.. _sec-manual-ctcchain: .. warning:: The writing of this page is in progress. Several changes are currently performed on the library. A new stable version of Codac will be released in the coming weeks. ********************************************** CtcChain: :math:`\dot{x_1}=x_2,~\dot{x_2}=x_3` ********************************************** .. contents:: Definition ---------- .. important:: .. math:: \left.\begin{array}{r}x_{(3)}\stackrel{\int}{\rightarrow}x_{(2)}\stackrel{\int}{\rightarrow}x_{(1)}\end{array}\right. \longrightarrow \mathcal{C}_{\iint}\big([x_1](\cdot),[x_2](\cdot),[x_3](\cdot)\big) .. tabs:: .. code-tab:: py ctc.chain.contract(x1, x2, x3) .. code-tab:: c++ ctc::chain.contract(x1, x2, x3); .. admonition:: Technical documentation See the `C++ API documentation of this class <../../../api/html/classcodac_1_1_ctc_chain.html>`_.