[latexpage]
\[\sum_0^\infty (x^2y=3x^2) .\]
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This is a simple test for working math equations.
You can easily type in any latex formated equiations.
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[latexpage]
\[r_X_Y = \frac{\sum_{i=1}^{n}(X_i – \overline{X})(Y_i – \overline{Y})}{\sqrt{\sum_{i=1}^{n}(X_i – \overline{X})^2} \sqrt{\sum_{i=1}^{n}(Y_i – \overline{Y})^2}} .\]
First Example
[latexpage]
\[T=R\sqrt{\frac{(n-2aa)}{(1-R^2)}}\]
Second Example
[latexpage]
\[T=R\sqrt{\frac{(n-2)}{(1-R^2)}}\]
[latexpage]
\[T=R\sqrt{\frac{(n55)}{(1-R^2)}}\]