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Find the values of p for which the series is convergent. Sigma infinite on top and n=1 on bottom. n(1+n^2)^p? F(x)= (x^3/2)-sinx+1 Find the tangent line approximation of f at pi/2? Why can't other alcohols be added to gasoline instead of ethanol? Prove that A is dense in X iff A closure equals X. A subset X.? How can we differentiate between alcohol and ether by chemical tests?