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Thank You so much!
f[x_] := (1/3) x^3 - (1/2) x^2 - 2 x + (1/3) g[x_] := x - 1 This is my graph: Plot[{f[x], g[x]}, {x, -4, 4}] I integrated and fund the regions Integrate[Abs[f[x] - g[x]], {x, -2.5833, 0.42303}] ...