Final answer:
To find the vectors t, n, and b at a given point, we differentiate the given function r(t) with respect to t. The t-vector is (2t, 6t², 1, 0, 0, 0), the n-vector is (2t, 6t², 0, 0, 0, 0), and the b-vector is (0, 0, 0, 1, -2/3, 0).
Step-by-step explanation:
To find the vectors t, n, and b, we need to differentiate the given function r(t) = (t², 2t³, t, 1, -2/3, -1) with respect to t. Let's differentiate each component separately:
t-vector:
t = (2t, 6t², 1, 0, 0, 0)
n-vector:
n = (2t, 6t², 0, 0, 0, 0)
b-vector:
b = (0, 0, 0, 1, -2/3, 0)