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(25pts) An idealized velocity field is given by the formula V = 4txi – 2t2yj + 4xzk a) Is this flow steady or unsteady? b) Is

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given + Чаzk че ч А - Ча1 gu - Фа 2v ət at On Әt = 4р аl — 21 217) 1. - 14 - 1 у Срг (3) (3) ex - 3 +0. a) flow is unsteady д(r ă = (16t 244x) 7 + (4 + y - 4 fy) +(6+xz + 15z?z) d) - \6k+u) † + (+4+) +(96+ +16) ТЗ 4 4

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