13KiB, 934x135, Screenshot 2022-02-12 at 15.17.36.png View SameGoogleiqdbSauceNAO trig integral solving mathnoob Sat 12 Feb 13:21:32 2022 No.14220629 ViewReplyOriginalReport Quoted By: >>14220646 How to substitute this one :]? The + 3 is giving me some trouble, i am very new to this type of integrals but would like to know how i should substitute here, thanks!