Question: Find the open interval(s) on which the curve given by the vector-valued function is smooth. r(t) = 1 t - 1 -i + 3tj

Find the open interval(s) on which the curve given by the vector-valued function is smooth.

r(t) = 1 t - 1 -i + 3tj

r(t) = 1 t - 1 -i + 3tj

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