integral of cos(ln(x)), integration by parts (w/ u-sub vs without u-sub)

integral of cos(ln(x)) with u sub: @0:00 integral of cos(ln(x)) without u sub, @8:20 subscribe to ‪@bprpcalcbasics‬ for more calculus tutorials Check out my 100 integral video for the ultimate integration practice    • 100 integrals (world record?)   ---------------------------------------- 🛍 Shop my math t-shirt & hoodies: amzn.to/3qBeuw6 💪 Get my math notes by becoming a patron:   / blackpenredpen   #blackpenredpen #math #maths #trigonometry #calculus #tutorial