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Which mathmaticians first used the symbol why?
"why" is not a mathematical symbol.
The first mathematical theory of tides was introduced by?
Sir Isaac Newton
Who first used the symbol pi when referring to the quotient obtained when the circumference divided by the diameter of a circle?
The first known use of the symbol π to represent the mathematical constant approximately equal to 3.14159... was by Welsh mathematician William Jones in 1706. However, it was the Swiss mathematician Leonhard Euler who popularized the use of π in his mathematical works and made it widely recognized.
What is the symbol for not equal to?
Generally that's != or it could be <>. A != B A <> B Both are "A is not equal to B" but the first is more common. EDIT: the symbols above are used in programming, but in more simple mathematics the symbol is a ( =/= ) where an equal symbol ( = ) is slashed.
Why does an equal sign look like two lines?
An equal sign IS two lines. Whatever mathemetician first invented the symbol apparently thought it was the best symbol to show equality (equal-ness).
