who was a famous jazz musician in 1920
Louis Armstrong Louis Daniel Armstrong (August 4, 1901 â€“ July 6, 1971), nicknamed Satchmo,[2] Satch, and Pops,[3] was an American trumpeter, composer, singer and occasional actor who was one of the most influential figures in jazz. His career spanned five decades, from the 1920s to the 1960s, and different eras in the history of jazz.[4] In 2017, he was inducted into the Rhythm & Blues Hall of Fame.
Lawrence Welk Lawrence Welk (March 11, 1903 â€“ May 17, 1992) was an American musician, accordionist, bandleader, and television impresario, who hosted the television program The Lawrence Welk Show from 1951 to 1982. His style came to be known to his large audience of radio, television, and live-performance fans (and critics) as "champagne music".[1]
1 + 2 + 3 + 4 + ⋯ which increases without bound as n goes to infinity. Because the sequence of partial sums fails to converge to a finite limit, the series does not have a sum.
Limit of a function (the Dirichlet function) has no limit at any x-coordinate.