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A função \vec{r}(t)=(\sin t)\,\vec{i}+(2+\sin t)\,\vec{j} onde t\in\left[-\d...
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A função \vec{r}(t)=(\sin t)\,\vec{i}+(2+\sin t)\,\vec{j}
onde t\in\left[-\dfrac{\pi}{2},\dfrac{\pi}{2}\right] parametriza
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