Alternative Equation Formats

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MathML

\begin{aligned} x_{t} & = \frac{a_{0}}{2} + \sum_{k = 1}^{K - 1} f_{k} (a_{k} \cos ω_{k} t + b_{k} \sin ω_{k} t) \\ f_{k} & = {\begin{cases} 1 / 2 & if T is even and k = K - 1 \\ 1 & otherwise \end{cases} \end{aligned}

Math Rendered as SVG

Math as LaTeX Source

\begin{align*} x_ t & = \frac{a_0}{2} + \sum _{k=1}^{K-1}f_ k ( a_{k} \cos \omega _ kt +b_{k} \sin \omega _ kt ) \\ f_ k & = \begin{cases} 1/2 & \text {if } T \text { is even and }k=K-1 \\ 1 & \text {otherwise} \end{cases}\end{align*}