We can calculate the gradient of a tangent to a curve by differentiating. In order to find the equation of a tangent, we: Differentiate the equation of the curve Substitute the \(x\) value into the ...
De Moivre's original derivation of the normal curve in a 7 page Note in Latin and its English translations in the 1738 and 1756 editions of his The Doctrine of Chances are described. Karl Pearson's ...
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