Spiral

[nikolaus2007]

Hello,

I want to plot a spiral like this http://www.mathematische-basteleien.de/spiral08.gif. 

How do I do that? I don't know how to begin.

The spiral should be in an XY-Graph at the end.

Can anyone help me please.

Best regards

Martin

[GerdW · Accepted solution]

Hi Martin,

the formula is already given in the picture - so where is your problem?

Is this some kind of homework?

Did you go through the basics course?

Anyway, the solution is as simple as this:

[nikolaus2007]

Thanks,

yes a kind of homework 😉 thanks anyway. My solution started like this

But the polar to complex vi didn't come to my brain.

Thanks

Best regards,

Martin