Determine whether the statement is true or false. if it is true, explain why. if it is false, explain why or give a counterexample. the functions r1(t) = 3cos(t)i + 3 sin(t)j + (3cos(t) + 3sin(t)) k and r2(t) = ti, (9-t^2)j, t+(9-t^2) are different parametrizations of the same curve

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