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\noindent{\LARGE Math 170}

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\item Find the expectation value of X where X={1,2,3} $f(1)=.5, f(2)=.25, f(3)=.25$.

\item $\sum_{i=1}^{\infty} f(x)^n, f(x)=1/x$.


\item Find $\int_0^1\frac{x^5}{2^x}dx$. 


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