Suppose the random variable distribution of a random variable X is as follows: X = xi P(x = xi) x1 x2 x3 . . . xn P1 P2 P3 . . . Pn Then, Arithmetic Mean μ = Variance σ2 […]
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MathematicsAs you may already know Photokina 2010 has started yesterday September 21 and will last till 26. It is the world’s leading fair for photography and imaging industries held at Cologne Trade Fair, Germany every 2 years where new products,
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GadgetsInverse of a Matrix Suppose A is a given matrix. If there exists a matrix B such that, AB = I = BI then A is said to be an invertible matrix and B is called as inverse of A
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MathematicsAdjoint of a Matrix If A is a square matrix then the transpose of a matrix obtained by replacing the elements of A by their co-factors is called the adjoint of a matrix A and is denoted by Adj A.
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MathematicsPotentiometer A Potentiometer is a electrical device used to measure unknown voltage by comparing it with a known voltage. It comprises of a slide wire of uniform cross-section and hence uniform resistance along its length. A calibrated scaling cm and
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Electrical