Discussion
Idea of logarithms was firstly introduced by
Answer: C
The credit here divides between two people, and the question asks for the idea rather than the tables.
- Al-Khwarizmi (9th century) set out the underlying idea, relating a geometric progression to the arithmetic progression of its exponents.
- John Napier (1614) built on that to publish the first logarithm tables, which is why he is named as the inventor of logarithms as a calculating device.
- Henry Briggs then recast Napier's system to base 10, giving the common logarithms.
Read the wording carefully: introduced the idea points to Al-Khwarizmi, whereas invented logarithms would point to Napier.
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