That shape is called an 'oval' or an 'ellipse'.
elipse
An ellipse.
Common term is an oval Mathematical is an ellipse
simple curve is a curve which doesnot cross itself,it neednot be closed....... but a simple closed curve is a curve which is simple and also closed. every simple closed curve is a simple curve but not vice versa.
An S-shaped curve is called a sigmoid curve. This term is used throughout the mathematical world and in healthcare settings.
No, it is not.
A battleship-shaped curve is a region found in archaeology where it is thought a battleship may once have lain.
yes
A bell shaped probability distribution curve is NOT necessarily a normal distribution.
it is shaped roughly like a bell... a bell curve.
helix
It's true: a curve is a curve. Did you really need me to tell you that?