Equation.

I solve you like an equation.
NP-complete just need an equivalence.
Finding the family of known complements.
Adding up the sum of the differentiations.
What's a soul in the grand scheme of things.
However big or small in a fractal dream.
Where the Xs & Ys find their roofs & ceilings.
Watch the pen traces out the local optimal.
Whoever awed by infinite decimals.
Whatever helps to grasp the imaginary.
Still master of null but some odd fellows.