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1. [DE] By Direct Integration
2. [DE] By Direct Integration
3. [DE] By Substitution
4. [DE] By Substitution
5. [DE] By Substitution
![[DE] By Direct Integration](https://edutv.sg/public/uploads/16389333581635.png)
![[DE] By Direct Integration](https://edutv.sg/public/uploads/16389333583823.png)
![[DE] By Substitution](https://edutv.sg/public/uploads/16462225421348.png)
![[DE] By Substitution](https://edutv.sg/public/uploads/16462225427040.png)
![[DE] By Substitution](https://edutv.sg/public/uploads/16462225422835.png)