Integration Equations*

Question 1

How to do reverse chain rule

Answer 1

Make a guess at the integral, try to differentiate and then adjust values so it fits

Question 2

How to do integration by substitution

Answer 2

Identify second function (not main, whole function), replace with u, differentiate to replace dx with du, replace all x terms in terms of u and then integrate as normal (dont forget to change limits)

Question 3

Integration by Parts formula

Answer 3

{ uv’ dx = uv - { vu’ dx