harmonicMean - nodef/extra-math GitHub Wiki
Find the harmonic mean of numbers.
Similar: arithmeticMean, geometricMean, harmonicMean, quadriaticMean, cubicMean.
function harmonicMean(...xs)
// xs: a list of numbers
const xmath = require('extra-math');
xmath.harmonicMean(1, 2);
// → 1.3333333333333333 (4/3)
xmath.harmonicMean(1, 2, 3);
// → 1.6363636363636365 (18/11)
xmath.harmonicMean(1, 2, 3, 4);
// → 1.92 (48/25)