Math Wrath

 is a perk in Fallout: New Vegas.

Effects
You are able to optimize your Pip-Boy's VATS logic, reducing all AP costs by 10 percent. Note that this perk applies across all weapons, but will also stack with weapon-centric VATS perks, like Plasma Spaz or Beautiful Beatdown.

Strategy
Compared with Action Boy, the usefulness of this perk is directly related to how much AP you have to begin with. If you have more than 75 AP, it would be better to take this perk. If you have less than 75 it would be better to take Action Boy. The reasoning behind this is explained below.

Math Wrath could also be thought of as increasing your total AP by 10% as well as increasing your AP recovery rate by 10%. Therefore this perk increases your total AP capacity by 20%. At 75 AP, the 15 AP you get from Action Boy would also increase your AP capacity by 20%. Because Action Boy's bonus does not change, it should be reserved for characters that would naturally have AP lower than this, such as those with low Agility. Math Wrath on the other hand is better for players who already have a significant amount of AP and want to boost their VATS ability as much as possible.

The reasoning here is flawed, for two reasons. First, reducing a cost by 10% does not equate to increasing the AP total by 10%. Mathematically, it would equate to increasing the AP total by 11.111%. Also, Math Wrath does not change your AP recovery rate, and even if it did, or even if you thought of it as doing so because you are pretending that it increases your AP pool rather than reducing your AP costs, a 10% increase in recovery rate definitely would not equate to a 10% increase in total AP. So yes, the usefulness of Math Wrath does vary by your AP pool size, but not at the cutoff point described above. Anyone with better math skills want to take another crack at it and find the true threshold?