Question: 1. X Your answer is incorrect. Use the formula k(t) _ [r (t) x r(t)| to find k(t). 1/I' (t) 113 r(t) = esti +

X Your answer is incorrect. Use the formula k(t) _ [r (t) x r"(t)| to find k(t). 1/I' (t) 113 r(t) = esti + etj 72 ert K (t) = (64(e1 6t) X + e - 2t ) 2X Your answer is incorrect. Find div F and curl F if F(x, y, z) = 9ety i - 7 cosy j + 9 sin z k. div F= 9 ery + 7 sin(y) + 9 sin(z) X curl F= -9 ery k X

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