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Line 3:
Line 3: − + − + − + − + + + +
<= -> \le
The most common parametrization is for a circle centered at the origin in the ''xy''-plane:
The most common parametrization is for a circle centered at the origin in the ''xy''-plane:
:<math>x=r \cos t</math>
*:<math>x=r \cos(t)</math>
:<math>y=r \sin t</math>
:<math>z=0</math>
*:<math>y=r \sin(t)</math>
:<math>0<=t<=2\pi</math>
*:<math>z=0</math>
*:<math>0 \le t \le \pi</math>
Always remember to be precise in determining the new limits on the new parameter ''t''.
Always remember to be precise in determining the new limits on the new parameter ''t''.