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单词 point of inflection
释义 point of inflection
[`pȯint ǝv in`flek·shǝn]
MATHEMATICS
A point where a plane curve changes from the concave to the convex relative to some fixed line; equivalently, if the function determining the curve has a second derivative, this derivative changes sign at this point. Also known as inflection point.
MECHANICS
See <<point of contraflexure>>
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