Derivative (Wikipedia)In mathematics, the derivative shows the sensitivity of change of a function’s output with respect to the input. Derivatives are a fundamental tool of calculus. For example, the derivative of the position of a moving object with respect to time is the object’s velocity: this measures how quickly the position of the object changes when time advances.
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Madison Park, Seattle (Wikipedia)Madison Park is a neighborhood in east central Seattle, Washington, USA, named after the city park at the foot of E. Madison Street on the Lake Washington shore. It is bounded on the east by Lake Washington; on the south by the intersection of Lake Washington Boulevard E. and 39th Avenue E., beyond which is Denny-Blaine; on the west by Lake Washington Boulevard E.; and on the north by Union Bay. Washington Park and the private Broadmoor community and golf course are subunits within Madison Park. The neighborhood’s main thoroughfares are E. Madison Street (northeast- and southwest-bound) and McGilvra Boulevard E. (north- and southbound).