I can't get my head round this one: int (1/x^2)*e^(1/x^2) I know I need to use substitution but if I use u=1/x the derivative doesn't seem to help and the same if I use u=1/x^2 Any help appreciated
Follow Math Help Forum on Facebook and Google+
Originally Posted by bellycan I can't get my head round this one: int (1/x^2)*e^(1/x^2) I know I need to use substitution but if I use u=1/x the derivative doesn't seem to help and the same if I use u=1/x^2 Any help appreciated Let $\displaystyle t=1/x$ then, $\displaystyle -\int e^{t^2}dt$ Which is not "doable".
Originally Posted by bellycan I can't get my head round this one: int (1/x^2)*e^(1/x^2) I know I need to use substitution but if I use u=1/x the derivative doesn't seem to help and the same if I use u=1/x^2 Any help appreciated if you have 0 to infinity as limits you might end up with the gamma integral after suitable substitutions
View Tag Cloud