Weighted Mean – Formula and Examples

Here you will learn what is weighted mean formula and how to calculate weighted mean with examples. Let’s begin – Weighted Mean Formula If \(w_1\), \(w_2\), ……\(w_n\) are the weights assigned to the values \(x_1\), \(x_2\), …..\(x_n\) respectively then their weighted mean is defined as Weighted mean = \(w_1x_1 + w_2x_2 +……+ w_nx_n\over {w_1 +…….+

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Eccentricity of Hyperbola – Formula and Examples

Here you will learn what is the eccentricity of hyperbola formula and how to find eccentricity with examples. Let’s begin – Eccentricity of Hyperbola Formula (i) For the hyperbola \(x^2\over a^2\) – \(y^2\over b^2\) = 1 Eccentricity (e) = \(\sqrt{1 + {b^2\over a^2}}\) (ii) For the hyperbola -\(x^2\over a^2\) + \(y^2\over b^2\) = 1 Eccentricity

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