凹凸性
concavity Describes the direction of curvature of a graph. If the second derivative is positive, the graph is concave up; if negative, it is concave down.
CSCA 数学 考试术语
concavity Describes the direction of curvature of a graph. If the second derivative is positive, the graph is concave up; if negative, it is concave down.
CSCA 数学 考试术语