Please, can anyone help me here with this problem?? Q) Determine for what values of element p is a member of set R, int[exp(px)]dx ; where upper lim=infinity , lower lim=0 converges and find its value in those cases? so far: I got the anti-derivative of the integrand is exp(px)/p. For the integral to exist, you must have p<0, in which case the value is -1/p. The integrand increases without bound for p>0, and for p=0, it is constant, again leading to an unbounded result for the value. This is where I'm lost, how do you find the value for p<0? Can anyone verify what I have done and help me solve this problem. Thanks for your help.