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\int_{t = 0}^{2 pi} \int_{z=-2.5}^{0.5} \int_{r=0}^{3} r cos (r^2) dr dz dt
\int_{t = 0}^{2 pi} \int_{z=-2.5}^{0.5} \int_{r=0}^{3} r cos (r^2) dr dz dt
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