Sunday

December 21, 2014

December 21, 2014

Posted by **Catherine** on Thursday, April 14, 2011 at 11:03pm.

(a) When is the parameterization tracing the circle out in a clockwise direction?

_____________

(Give your answer as a comma-separated list of intervals, for example, (0,1), (3,Inf)). Enter the word None if there are no such intervals.

(b) When is the parameterization tracing the circle out in a counter-clockwise direction?

__________

(Give your answer as a comma-separated list of intervals, for example, (0,1), (3,Inf)). Enter the word None if there are no such intervals.

C)Does the entire unit circle get traced by this parameterization?

(d) Give a time t at which the point being traced out on the circle is at (1,0):

t=_________

Ok, I graphed it in my graphing calculator, the circle seemed to be tracing itself for a while, but I still don't get how to write the intervals. Since it appeared to be just tracing itself clockwise, I typed in the first one (my homework is online)

(0,1),(1,0),(0,-1),(-1,0)

A message was shown saying that the left endpoint must be less than the right endpoint, so I'm not sure how to solve this one. I believed the answer for B was none, but that's not it, I typed Yes for the third part and 0 for the last one since it started at that point...

Can someone please explain to me how to do the first and 2nd part?

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