Alternative Equation Formats

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MathML

\begin{aligned} {d f}^{(k)} & = - g^{(k)^{'}} s^{(k)} - \frac{1}{2} s^{(k)^{'}} H^{(k)} s^{(k)} \\ = - \frac{1}{2} s^{(k)^{'}} g^{(k)} \leq r \end{aligned}

Math Rendered as SVG

Math as LaTeX Source

\begin{align*} \mi{df}^{(k)} & = -\mb{g}^{(k)^\prime } \mb{s}^{(k)} - \frac{1}{2} \mb{s}^{(k)^\prime } \bH ^{(k)} \mb{s}^{(k)} \\ & = - \frac{1}{2} \mb{s}^{(k)^\prime } \mb{g}^{(k)} \leq \Argument{r} \end{align*}