What is the domain of r(t) = e'i + tij+ cos(t + 8)k? (Use symbolic notation and fractions where needed. Give your answers as intervals in the form (*, *). Use inf for infinity, U for combining intervals, and appropriate type of parenthesis "(", ")", "[" or "]"depending on whether the interval is open or closed.) D = help (fractions)

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Q: How do I convert that anwser to an interval notation?

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