If you don't recognize the anti-derivative at the outset sight, the substitution helps you to evaluate the integral with no an excessive amount issue. There seems to be no strategy for simplifying or rearranging the integral. Integration by components only performs for using the derivative on the exponential section, but https://gabletoppak.com/why-every-home-should-use-long-lasting-oil-storage-cartons-for-daily-cooking/