The Big O (album) The Big O (album) The Big O is the fifteenth music album recorded by Roy Orbison, and according to Marcel Riesco's official Roy Orbison discography, his second for London Records in the United Kingdom. The music and backing vocals were provided by English group, the Art Movement on all tracks except for "Penny Arcade", which was a studio recording and was released as a single in 1969, peaking at #27 in the UK and would be Orbison's last UK chart success during his lifetime. "Penny Arcade" was also his biggest hit in Australia, spending four weeks at Number One around
Big O notation it would be more precise to use set notation and write "f"("x") ∈ "O"("g"("x")), thinking of "O"("g"("x")) as the class of all functions "h"("x") such that |"h"("x")| ≤ "C"|"g"("x")| for some constant "C". However, the use of the equals sign is customary. Knuth pointed out that "mathematicians customarily use the = sign as they use the word 'is' in English: Aristotle is a man, but a man isn't necessarily Aristotle." Big O notation can also be used in conjunction with other arithmetic operators in more complicated equations. For example, "h"("x") + "O"("f"("x")) denotes the collection of functions having the growth