NDA Government Jobs Exams

The function f(x) = x^2 – 4x, x ∈ [0, 4] attains minimum value at

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NDA Other Question

The standard deviation of the observations 5, 5, 5, 5, 5 is
(a) 0 (b) 5 (c) 20 (d) 25 The curve y = x^ex has minimum value equal to