Alternative Equation Formats

The equation on this page is available in multiple formats. Depending on your browser, some formats might not render correctly.

MathML

ψ (e_{i}) = {\begin{cases} e_{i} {(1 - {(\frac{e_{i}}{σ k})}^{2})}^{2} & | e_{i} / σ | \leq k \\ 0 & | e_{i} / σ | > k \end{cases}

Math Rendered as SVG

Math as LaTeX Source

\[ \psi (e_ i) = \left\{ \begin{array}{ll} e_ i \left( 1 - \left(\frac{e_ i}{\sigma k}\right)^2\right)^2 & |e_ i/\sigma | \leq k \cr 0 & |e_ i/\sigma | > k \end{array} \right. \]