Alternative Equation Formats

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MathML

D_{X} = I_{X} \frac{1}{σ_{x}^{2}} = 4 I_{X}

D_{X} = I_{X} \frac{1}{σ_{x}^{2}} = 4 I_{X}

\[ D_{X} = I_{X} \, \, \frac{1}{\sigma ^{2}_{x}} = 4 \, I_{X} \]