Unbeaten Concave, a game half-length winner of the recent Sorrento Stakes, and runner-up She's a Tiger renew their battle in the $300,000 Del Mar Debutante Aug. 28. The seven-furlong Polytrack event ...

👉 Learn how to determine the concavity of a function. A function is said to be concave up (convex) if the graph of the curve is facing upwards and the function is said to be concave down (concave) if ...