Revised Lec 2
Revised lec 2
graph TD;
A[Revised lec 2] --> B((Maths));
B --> C{Mermaid version 9.3.0};
C --> D[Topic 1];
C --> E[Topic 2];
C --> F[Topic 3];
D --> G[Subtopic 1.1];
D --> H[Subtopic 1.2];
E --> I[Subtopic 2.1];
E --> J[Subtopic 2.2];
F --> K[Subtopic 3.1];
F --> L[Subtopic 3.2];
