Descartes's rule of signs
Des·cartes's rule of signs | \ (ˈ)dā¦kärts-, -kȧts-\
Definition of Descartes's rule of signs
: a rule of algebra: in an algebraic equation with real coefficients, F(x) = 0, arranged according to powers of x, the number of positive roots cannot exceed the number of variations in the signs of the coefficients of the various powers and the difference between the number of positive roots and the number of variations in the signs of the coefficients is even
Keep scrolling for more
Love words? Need even more definitions?Merriam-Webster unabridged
Words at Play
- Where Does 'Run-of-the-Mill' Come From?
- The Provenance of 'Providence'
- The Good, The Bad, & The Semantically Imprecise - 8/16/19
- Lovelock to Trichologist: 8 Words About Hair
Ask the Editors
- On Contractions of Multiple Words
- A Look at Uncommon Onomatopoeia
- Is Singular 'They' a Better Choice?
- Summer 2019 Words of the Day Quiz Take the quiz
- Obscure Shapes Take the quiz
- Name That Thing Take the quiz
- Syn City Play the game