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 as a function of "x", namely 6"x". Now one may apply the second rule: 6"x" is a product of 6 and "x" in which the first factor does not depend on "x". Omitting this factor results in the simplified form "x". Thus, we say that "f"("x") is a "big-oh" of ("x"). Mathematically, we can write "f"("x") = "O"("x"). One may confirm this calculation using the formal definition: let "f"("x") = 6"x" − 2"x" + 5 and "g"("x") = "x". Applying the formal definition from above, the statement that "f"("x") = "O"("x") is equivalent to its expansion, for some suitable choice