A function and its graph are given. Use the graph to find 
, if it exists, where 
. Confirm your results analytically. 
Definitions:
Operating System
A program that controls computer hardware and software assets, offering universal services for various computer applications.
IBM PCs
A reference to the series of personal computers released by IBM starting in 1981, which set the standard for PC architecture.
1980
A year marked by significant events, both culturally and historically, including the eruption of Mount St. Helens and the release of the video game Pac-Man.
Bell Telephone Laboratories
A historical and influential research and scientific development company responsible for notable technological innovations.
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