[Tex/LaTex] Error in multline

equationsmultline

This is related to my early question, but with some changes:

\documentclass[11pt,twoside,a4paper]{article}
\usepackage{amsmath}
\usepackage{enumerate}
 \begin{document}
  \begin{multline}
 E(y_{i})=
\left(
 x_{2i}'\beta_{2}+
\frac{\sigma}{\Psi\left(x_{1i}'\beta_{1},\tfrac{x_{2i}'\beta_{2}}{\sigma},\rho\right)}
\left[
\phi\left(\tfrac{x_{2i}'\beta_{2}}{\sigma}\right)\Phi\left(\tfrac{x_{1i}'\beta_{1}-   \rho\tfrac{x_{2i}'\beta_{2}}{\sigma}}{\left(1-\rho^{2}\right)^{1/2}}\right)\right.\\
\qquad 
+ \left. 
\rho\phi(x_{1i}'\beta_{1})\Phi\left(\tfrac{\tfrac{x_{2i}'\beta_{2}}{\sigma}-\rho x_{1i}'\beta_{1}}{\left(1-\rho^{2}\right)^{1/2}}\right)
\right]
\right)
\times\Psi\left(x_{1i}'\beta_{1},\tfrac{x_{2i}'\beta_{2}}{\sigma},\rho
\right)
\end{multline} 
\end{document}

I have no idea why this is generating an error. !Missing right \.inserted

Best Answer

If you really had to use \left and \right... Additional ones marked.

\documentclass[11pt,twoside,a4paper]{article}
\usepackage{amsmath}
\usepackage{enumerate}
 \begin{document}
  \begin{multline}
 E(y_{i})=
\left(
 x_{2i}'\beta_{2}+
\frac{\sigma}{\Psi\left(
x_{1i}'\beta_{1},\tfrac{x_{2i}'\beta_{2}}{\sigma},\rho
\right)}
\left[
\phi\left(
\tfrac{x_{2i}'\beta_{2}}{\sigma}
\right)\Phi\left(
\tfrac{x_{1i}'\beta_{1}-   \rho\tfrac{x_{2i}'\beta_{2}}{\sigma}}{\left(1-\rho^{2}\right)^{1/2}}
\right)
\right.
\right. % PS
\\
\qquad 
+ \left. 
\left. %PS
\rho\phi(x_{1i}'\beta_{1})\Phi\left(
\tfrac{\tfrac{x_{2i}'\beta_{2}}{\sigma}-\rho x_{1i}'\beta_{1}}{\left(1-\rho^{2}\right)^{1/2}}
\right)
\right]
\right)
\times\Psi\left(
x_{1i}'\beta_{1},\tfrac{x_{2i}'\beta_{2}}{\sigma},\rho
\right)
\end{multline} 
\end{document}

enter image description here

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[Tex/LaTex] Multline & Splitfrac

The error is telling you that you have unpaired \left and \right commands. You need to add a \right. and \left. to match the ones on the first and last lines of the environment.

\documentclass{article}
\usepackage{amsmath}
\usepackage{mathtools}

\begin{document}
\begin{multline*}
-\dfrac{1}{64\pi^2}
\left[     
      \dfrac{
        \splitfrac{
            (m_2-m_3)(2y_e^2-y_\mu^2-y_\tau^2
              }{
              + (y_\mu^2-y_\tau^2 )\cos2{\theta_{23})\sin\delta^2\sin\theta_{12}^2\sin2\theta_{13}}
              }
        }{
          m_2+m_3
         }
    \right.%<-------------------HERE
    \\
    + \dfrac{
      \splitfrac{
              (m_2 + m_3)\cos\delta\sin\theta_{12}(\cos\delta(2y_e^2-y_\mu^2-y_\tau^2 + (y_\mu^2-y_\tau^2 )\cos2\theta_{23})\sin\theta_{12}\sin2\theta_{13}
            }{
            + 2(y_\mu^2-y_\tau^2)\cos\theta_{12}\cos\theta_{13}\sin2\theta_{23})
            }
        }{
          m_2-m_3
         }\\
    + \dfrac{
         \splitfrac{ 
          2(m_1+m_3)\cos\delta\cos\theta_{12}\cos\theta_{13}(\cos\delta\cos\theta_{12}
          }{
        (2y_e^2-y_\mu^2-y_\tau^2 + (y_\mu^2-y_\tau^2 )\cos2\theta_{23})\sin\theta_{13}+(-y_\mu^2+y_\tau^2)\sin\theta_{12}\sin2\theta_{23}
           }
         }{
             m_1-m_3
          }\\
    \left. %<-------------------HERE
    +\dfrac{1}
             {
              \splitfrac{
                         (m_1+m_3)2(m_1+m_3)\cos\theta_{12}\cos\theta_{13}\sin\delta(y_\mu^2
                        }{
                          -y_\tau^2 )\cos\delta\sin\delta\sin\theta_{12}\sin2\theta_{23}
                         }{
                           +\sin\delta(\cos\theta_{12}(2y_e^2-y_\mu^2-y_\tau^2+(y_\mu^2
                         }{
                            -y_\tau^2)\cos2\theta_{23}\sin\theta_{13}+(-y_\mu^2 + y_\tau^2)\cos\delta\sin\theta_{12}\sin2\theta_{23}
                         }
              }
 \right]            
 \end{multline*}


\end{document}

Best Answer

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