||' Use the formula k(t) = llr”(t) * r"(t)|| to find k(t). ||r'(t)|| = 3 r(t) = 7 cos(9t)i + 7 sin(9t)j + tk — k(t) =
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||' Use the formula k(t) = llr”(t) * r"(t)|| to find k(t). ||r'(t)|| = 3 r(t) = 7 cos(9t)i + 7 sin(9t)j + tk — k(t) =
||' Use the formula k(t) = llr”(t) * r"(t)|| to find k(t). ||r'(t)|| = 3 r(t) = 7 cos(9t)i + 7 sin(9t)j + tk — k(t) =
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