Hi, I am currently learning integration.
I encountered an integration question in the top left of the attached image, ya solution provided.
My teacher said that I needed to memorise all 3 formulas at the bottom right of image to solve the question and similar questions in future.
Are they basic formulas that I must memorise?
If not, can someone show me how to derive on the spot?
I believe Maths should be testing LOGIC and APPLICATION, not on MEMORY WORK even though some formulas have to be memorise like those 3 on the bottom left.