Times tables
Because they are tables of the numbers that are the result of "times"-ing a number.
Suppose you want to divide x by y Find log(x) and log(y) to any base b (usually 10 or e) Calculate z = log(x) - log(y) Look up the antilog of z (or find the number whose log is z). x/y = antilog(z)
Is it 12
tables are used for eating on not sitting on
john napier
Logarithm tables help you work with logarithms without using a calculator. Calculating a logarithm can be a long process. A table eliminates the need to perform extra math. If you need a specific logarithm, you simply look it up. The calculator was invented in the 1970's. Before that, people used slide rules or tables of logarithms. Using the tables of logarithms, you could perform multiplication, division, find roots or powers - and do all of that fairly easily.
The actual calculations to get a logarithm are quite complicated; in most cases you are better off if you look the logarithm up in tables, or use a scientific calculator.
Pythagora discovered time tables
Besides using a calculator, there are tables of logarithms. You can find the antilog that way. See the related link.
1461
Sir Hugh Munro produced his "Tables" in 1891, listing all Scottish peaks over 3000 ft.
The simplest way to do it is to use Logarithms, from a book of Logarithmic Tables and Anti-logarithms. You simply look up the Logarithm of your quantity, then divide that quantity by 2 , and then look up its Anti-logarithm. that will give you the answer.
DR. Henry ashole!
Ashlee Joy Bubbles!(:
The distinguished Scottish mathematician, John Napier, provided science and mathematics with a vastly improved and rapid method of notation and calculation. He founded the use of logarithm, a way to turm multiplication into addition, and Division into subtraction. Thus, he facilitated a computational system whereby roots, products and quotients could easily be determined from tables showing powers of a fixed number used as a base. The basis for this computation is the relationship between arithmetic progressions and geometric progressions. Scientists and mathematicians continued to use logarithms until the invention of the calculator and the computer, which proved to be more efficient tools.
Tables of different types have been "invented" by just about every society that ever existed. Isn't that ones of the first things you would make if you had tools?