peis DST HW 1. Derive the diffusivity equation for one-dimensional, linear flow of a slightly compressible liquid. (5 marks) 2. Provide an illustration of diffusivity equations for various scenarios. (2 marks) 3. Suggest a solution for the diffusivity equation. (3 marks) 4. The following figure represents a real DST chart for pressure and temperature measurements. Analyze and interpret the diagram to understand the pressure behavior over time. (5 marks) 5. The duration extends from 85 hours to 120 hours. Create a table to record the pressure at five-hour intervals. [3 marks) 6. Could you specify the hydrostatic pressure, initial and final flow rates, and shut-in pressure? [2 marks) 3830 2903 1930 deg C Hours