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1795 tables also gave the logarithms of the sines, cosines and tangents with 7 decimals every 10000th of the quadrant. Moreover they gave the natural sines and cosines with. In 1617, of the first extensive table of decimal logarithms of numbers. Briggs realized that when x = 1+r is close to 1, then log x ≈ 1+αx, where.
Natural Logarithm Table Table of ln(x) xln x0undefined0 +- ∞0.0001-9.2103400.001-6.9077550.01-4.6051700.1-2.693147≈ 2.71121.609592.0791718603819555140See also.