If You don't identify the anti-derivative initially sight, the substitution permits you to evaluate the integral without having excessive trouble. There seems to be no method of simplifying or rearranging the integral. Integration by components only is effective for using the spinoff on the exponential component, but that leaves larger https://gabletoppak.com/kerala-high-court-says-not-to-use-plastic-bottles-at-weddings-in-state/