$$\left[\begin{array}{cc}{\mathrm{\nabla }}^{2}f(x^{\ast })& \mathrm{\nabla }h(x^{\ast }{)}^T\\ \mathrm{\nabla }h(x^{\ast })& 0\end{array}\right]\left[\begin{array}{c}\mathrm{\Delta }x\\ {\mu }^{\ast }\end{array}\right]=\left[\begin{array}{c}-\mathrm{\nabla }f(x^{\ast })\\ -h(x^{\ast })\end{array}\right]$$

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