<p>Let X be exponentially distributed with parameter λ i.e., f(x) =λe^(−λx)u(x) where u(x) is unit step function.</p><p><strong>2-(a)</strong> Find the moment generation function of X,MX(s).</p><p><strong>2-(b)</strong> Try to deduce the k-th moment,E(X^k).</p>