Alternative Equation Formats

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MathML

V = σ_{0}^{2} I + \sum_{i = 1}^{n_{r}} σ_{i}^{2} X_{i} X_{i}^{'}

V = σ_{0}^{2} I + \sum_{i = 1}^{n_{r}} σ_{i}^{2} X_{i} X_{i}^{'}

\[ \bV =\sigma _0^2\bI +\sum _{i=1}^{n_ r}\sigma _ i^2\bX _ i\bX _ i' \]