Find r'(t), r"(t), r'(t) · r"(t), and r'(t) x r"(t). r(1) = i – 26j + %3D (a) r(t) 3ti- 2j + 2 k (b) r"(t) 31 + 5kt (c) r'(t) · r"(t) 257 + 18. (d) r'(t) x r"(t) 15 -10ti

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