} \sin \left( \psi + \alpha_{\rm T} \right) \label{eq:dxdy2vtalphat}
    \end{eqnarray}
</p>
</p><pre class="codeinput">altVar_t    = [ALPHAT_t(t) VT_t(t)];
altVarD1_t  = diff(altVar_t,t);
altVar      = [ALPHAT VT];
altVarD1    = [dALPHAT dVT];
</pre><h2 id="5">Conversion variables</h2><p>Array to switch symfun <a href="-">-</a> sym</p><pre class="codeinput">symfunVariables = [q_t  dq_t    ddq_t   altVar_t    altVarD1_t  ];
symVariables    = [q    dq      ddq     altVar      altVarD1    ];
</pre><h2 id="6">