# Derivatives of Vector Cross Products

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Calculate d/dt [ r_1(t) * r_2(t) ] for r_1(t) = < 2t, 3t^(2), t^(3) > , r_2(t) = < 0, 0, t^(4)> .

P.S. * = cross product and r_1 = r(subscript)1, r_2 = r(subscript)2

keywords: differentiating, differentiate, differential

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