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Sphyrna alleni is a small species of shark, measuring less than 150 centimetres (4.9 ft) in length. Like other hammerhead sharks , its head is shaped into a flattened cephalofoil. The latter has a more angular anterior edge than that of S. tiburo , and bears lobes on its posterior edges, leading to it being described as "shovel-like". [ 1 ]
A parabola, a convex curve that is the graph of the convex function () = In geometry , a convex curve is a plane curve that has a supporting line through each of its points. There are many other equivalent definitions of these curves, going back to Archimedes .
A hammerhead shark in shallow water. According to the International Shark Attack File, humans have been subjects of 17 documented, unprovoked attacks by hammerhead sharks within the genus Sphyrna since AD 1580. No human fatalities have been recorded. [34] Most hammerhead shark species are too small to inflict serious damage to humans. [8]
In the theory of quadratic forms, the parabola is the graph of the quadratic form x 2 (or other scalings), while the elliptic paraboloid is the graph of the positive-definite quadratic form x 2 + y 2 (or scalings), and the hyperbolic paraboloid is the graph of the indefinite quadratic form x 2 − y 2. Generalizations to more variables yield ...
The graph of a real single-variable quadratic function is a parabola. If a quadratic function is equated with zero, then the result is a quadratic equation . The solutions of a quadratic equation are the zeros (or roots ) of the corresponding quadratic function, of which there can be two, one, or zero.
The smalleye hammerhead (Sphyrna tudes), also called the golden hammerhead or curry shark, is a small species of hammerhead shark in the family Sphyrnidae. This species was historically common in the shallow coastal waters of the western Atlantic Ocean, from Venezuela to Uruguay. It favors muddy habitats with poor visibility, reflected by its ...
The Carolina hammerhead is named in honor of Carter Gilbert, who unknowingly recorded the first known specimen of the shark off Charleston, South Carolina, in 1967. [6] Dr. Gilbert, who was the curator of the Florida Museum of Natural History from 1961–1998, caught what he believed was an anomalous scalloped hammerhead shark with 10 fewer ...
For example, one or two foci can be used in defining conic sections, the four types of which are the circle, ellipse, parabola, and hyperbola. In addition, two foci are used to define the Cassini oval and the Cartesian oval , and more than two foci are used in defining an n -ellipse .