Question: Find r(t) . u(t). Is the result a vector-valued function? Explain. r(t) = (3t 1)i + tj + 4k, u(t) = ti 8j + tk

Find r(t) . u(t). Is the result a vector-valued function? Explain.

r(t) = (3t 1)i + tj + 4k, u(t) = ti 8j

r(t) = (3t 1)i + tj + 4k, u(t) = ti 8j + tk

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