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*} df^{(k)} & = -\mb{g}^{(k)\prime } \mb{s}^{(k)} - \frac12 \mb{s}^{(k)\prime } \mb{H}^{(k)} \mb{s}^{(k)} \\ & = - \frac12 \mb{s}^{(k)\prime } \mb{g}^{(k)} \\ & \leq r \end{align*}