2 ms·
"Use (x-y)(x+y)" is part of the "folk wisdom." It's between "We even know some folk wisdom intended to avoid the dangers." and "or is it increasing magnitude?",
by dalke 12y ago
"Use (x-y)(x+y)" is part of the "folk wisdom." It's between "We even know some folk wisdom intended to avoid the dangers." and "or is it increasing magnitude?", where the last bit shows that perhaps these aren't the best solutions.
- conistonwater 12y agoNo, later in the article they recommend using it, saying that it decreases floating-point errors.
- dalke 12y agoAhh! Yes, in the box on p94 titled "About That Folk Wisdom". Thanks for the correction!