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hokiespurs / learnbook

my summary documents for math and engineering concepts
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fix covariance symbolic nomenclature #2

Closed hokiespurs closed 6 years ago

hokiespurs commented 7 years ago

\sigmax^2 & \sigma{xy} \ \sigma_{xy} & \sigma_y^2

Only variances are squares, covariances are not squared

hokiespurs commented 6 years ago

fixed