Question: A 2 - dimensional flow is described by the following velocity field: u = - 6 x ^ 2 y + 2 y ^ 3

A 2-dimensional flow is described by the following velocity field:
u =-6x^2 y +2y^3 ; v=-2x^3+6xy^2(m/s)
Is this flow rotational or irrotational? Justify your answer

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