Cube root can be done with a compass-and-straightedge construction. Newton's method is an iterative method that can be used to calculate the cube root. For real floating-point numbers this method reduces to the following iterative algorithm to produce successively better approximations of the cube root of "a": The method is simply averaging three factors chosen such that at each iteration. Halley's method improves upon this with an algorithm that converges more quickly with each step, albeit consuming more multiplication operations: With either method a poor initial approximation of "x" can give very poor algorithm performance, and coming up with a good initial
Gelatinous cube who's not either glued to the floor or fast asleep. In fact, we're pretty sure the "Dungeon Master's Guide" reads: "The first player to ask "Can't I just get out of the way?" automatically defeats the Gelatinous Cube"." Rob Bricken from io9 named the gelatinous cube as the 5th most memorable D&D monster. Chris Sims of the on-line magazine "Comics Alliance" stated of the gelatinous cube that "there can be no question of what is the greatest monster" in "D&D", calling the gelatinous cube "amazing". Gelatinous cube A gelatinous cube is a fictional monster from the "Dungeons & Dragons" fantasy