Question: The unit circle with the point (1, 0) removed has parametrization (see Exercise 79 in Section 11.1) Use this parametrization to compute the length of

The unit circle with the point (−1, 0) removed has parametrization (see Exercise 79 in Section 11.1)

r(t): = 1-1 2t 1+1 1 + 1, -


Use this parametrization to compute the length of the unit circle as an improper integral. Hint: The expression for'(t) simplifies.

r(t): = 1-1 2t 1+1 1 + 1, -

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