What is the origin of the symbol of integral in mathematics?
It is an elongated letter S, from the Latin "summa" (sum)
It is a curled symbol /, meaning division
It symbolizes two brackets connected together
It is a letter f, from the English "function"
The notation was introduced by the German mathematician Gottfried Wilhelm Leibniz in 1675 in his private writings; The symbol was based on the ſ (long s) character, and was chosen because Leibniz thought of the integral as an infinite sum of infinitesimal summands.
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