CALCULUS PRESENTED BY GUO CHENG GUANG（05-35）--three methods to integrate

Using three methods(1.Factorization+Partial Fraction 2.Factorization+Partial Fraction+Quadratic formula+Complex numble) 3.Factorization+Partial Fraction+Complex variable) to Solve Indefinite Integration. Calculus--Indefinite Integrals (05-35, total: 298) Presented By Guo Cheng Guang (aged 11) and Guo Chengxi (aged 8) in English. Lessons In Mathematics and Science (Physics, Chemistry and Biology) From Primary to University Presented By Guo Cheng Guang and Guo Chengxi In English. Your comment or suggestion is very much appreciated. https://www.youtube.com/channel/UC2dG5T9SJkUFTy-h0KbVbkw