This is what happens when math decides to have an existential crisis. The equation y = tan(tan(x² + y²)) creates this hypnotic nightmare of concentric circles and jagged discontinuities that would make even seasoned mathematicians reach for the aspirin.
It's like watching a perfectly reasonable function get drunk and start making terrible life decisions. The tangent function already goes to infinity at regular intervals, but nesting them and throwing in a squared term? That's just mathematical sadism.
Your graphing calculator didn't die for this. Next time you want to torture numbers, just divide by zero like a normal person.