Thus, here is an example of a function: [{1, 1}, {2, 1}, {3, 2}] This function consists of three pairs, whose first members are 1, 2 and 3. It is customary to give functions names, like f, g or h, and if we call this function f, we generally use the following notation to describe it: f(1) = 1, f(2) = 1, f(3) = 2. The first members of the pairs are called arguments and the whole set of them is called the domain of the function. Thus the arguments of f here are 1, 2 and 3, and the set consisting of these three numbers is its domain.
Road speed limits are used in most countries to set the maximum (or minimum in some cases) speed at which road vehicles may legally travel on particular stretches of road. Speed limits may be variable and in some places speeds are unlimited (e.g. on some Autobahn sections in Germany).
1st January 2011: As by end of 2010, the highest speed of human recorded was of 44.72 km/h (27.79 mph), seen during a 100 meters sprint (average speed between the 60th and the 80th meter) by Usain Bolt. The fastest speed of a human running was set by Maurice Greene, who achieved a sprint speed of 26.7 mph. Note that is anarobic : the highest sustained speed is just over 15 miles an hour - i.e. a 4 minute mile. So the first is the limit of the legs, the second the limit of the heart.