A cyclic process 1–2–3–1 is performed over an ideal gas, the graph of which is shown in the figure. The work under compression (section of the graph 2–3) is equal to A1. The volume of gas changes by 4 times during the cycle. The expansion process (section of the graph 1–2) occurs in such a way that the pressure depends on the volume according to a linear law, and states 1 and 2 correspond to the same temperature. Determine the work of the gas during the cycle.

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