400. That’s an error.

Your client has issued a malformed or illegal request.

• The parameter 'chl=\left[ \begin{array}{ccc} 2\Sigma & 1 & \vec \mu \\ \vec 1 & 0 & 0 \\ \vec \mu & 0 & 0 \end{array} \right] \left[ \begin{array}{c} \vec w \\ \lambda_1 \\ \lambda_2 \end{array} \right] = \left[ \begin{array}{c} 0 \\ 1 \\ \mu_P \end{array} \right]' exceeds the maximum formula length of 200 characters.