# Griddy Circles #0 (Advanced)

## Creator

Dan Anderson (@dandersod)

## Difficulty

Advanced

## On to the Challenge!

Can you create the following graph using desmos.com or some other graphing tool? If you’re victorious, leave us a note in the comments when you’re done.

I managed, was quite easy actually 🙂

I’m glad! I think it’s only easy if you see the individual lines.

Yeah, that makes sens

Also, may I share the formula I came up with? it might be slightly different from yours

Please share!

This was my formula:

r =1.5+2floor(theta/(2pi))+sin(11*theta+floor(theta/(2pi)+1)pi )

or https://www.desmos.com/calculator/2s30wcjf5z (I don’t know how to change the range for theta)

I am not sure if the floor functions counts as cheating though

Here is my attempt at producing this graph:

https://www.desmos.com/calculator/7db8o002az

I also added variables to control the amplitude, number of lines, and Oscillations per Rotations. Also, be careful when you change these variables, because if they are too large, they will make the graph lag very much.