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moment generating function,  mgf of binomial distrbution
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find the mgf  of the binomial distribution and hence deduce the mean and variance
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mgf is expectation of e^(tx)
since the distribution is discrete use summation
for mean , differentiate the mgf w.r.t t and then put t=0
for second raw moment ,differentiate the mgf twice w.r.t t and then put t=0
answer and  some steps are given below
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mean of the poisson distribution ------mean of the poisson distribution
mean and variance of the discrete uniform distribution f(x) = 1/k , x = 1,2,...k  mean and variance of discrete uniform

integration formulae

problems on integration






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