Some noisy tests

These are all single-function renders, just trying out new functions

Anyone know of a good source of functions that produce Mandelbrot-like fractals?
I need functions that I could essentially hotswap instead of z²+c and have nice results

@gaeel mathr.co.uk/kf/manual.html#for are the ones in Kalle's Fraktaler 2 (which I am the current maintainer/author of). Most were added by Karl (the original author) based on suggestions from various members of FractalForums (historically .com, currently .org).

But these are all structured like $z→f(z)+c$ (because it needs this format for deep zooming with perturbation rendering), while putting the $c$ elsewhere in the formula can be interesting too.

Also, KF doesn't do formulas with division or functions like $\sin(z)$.

@mathr hey thanks!