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|dw:1352924458586:dw|

I'm not sure what you mean by parametrise

Meaning put it into parametric form.

OK. Forget about the z for a minute \[f(t)=cost \hat{x}+sint \hat{y} \] Is the circle

\[0

Gotcha. Im mostly fine with finding. x=rcos(theta) y=rsin(theta). Im not sure how to find z though.

Now, to include the z co-ordinate:\[cost \hat{x}+sint \hat{x}+(\frac{t}{\pi}-1)\hat{z}\] \[ 0

Hmmm, not 100% sure how you go to that point. Could you break it down for me?

Because \[t=0, (\frac{0}{\pi}-1))=-1\]
\[t=0, (\frac{2 \pi}{\pi}-1))=1\]

I really don't think I even understand the basic concept of this section to be honest.

It certainty doesn't help that I was incorrect. What I actually coded for was|dw:1352927439044:dw|

That is, a spiral rather than a full curve