Saturday, May 11, 2013

Fox 356

Tony García has sent this one.  The relationship may be simplified.  At least, a more concise expression may be found - with your help.

The question is still open:
Can r be written as function of a only?

Sunday, January 27, 2013

Fox 355

Roland Sampy submited this one.  Let's confirm his answer.
Happy new year to all, by the way!