From the INTRODUCTION. OF THE USE OF THE TABLES OF LOGARITHMS. The logarithms given in the tables are all supposed to be positive, and to have the decimal point prefixed to them. The index of a logarithm is the whole number preceding the decimal point; it may be positive or negative, and must be supplied according to the following rules: - The index of the logarithm of any number greater than unity, is equal to one less than the number of figures on the left hand of the decimal point; thus the index of the logarithm of ...
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From the INTRODUCTION. OF THE USE OF THE TABLES OF LOGARITHMS. The logarithms given in the tables are all supposed to be positive, and to have the decimal point prefixed to them. The index of a logarithm is the whole number preceding the decimal point; it may be positive or negative, and must be supplied according to the following rules: - The index of the logarithm of any number greater than unity, is equal to one less than the number of figures on the left hand of the decimal point; thus the index of the logarithm of 3652 is 3∙. The index of any decimal fraction is a negative number, equal to unity added to the number of zeros immediately following the decimal point; thus the index of the logarithm of ∙00462 is -3∙.; the index of ∙462 is - l∙.* Instead of employing negative indices, their complements to 10 are sometimes used, and +7∙ and +9∙ are substituted for the above indices -3∙ and -1∙. When this is done, it is necessary to reject, at some subsequent stage, the 10 by which the indices have thus been augmented.... *As the decimal part of the logarithm is not negative, it is better to put the negative sign of the index above, instead of before it, as 3∙ instead of -3∙
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Add this copy of Table of Logarithms of the Natural Numbers From 1 to to cart. $199.00, very good condition, Sold by mossback books rated 5.0 out of 5 stars, ships from Hartland, MI, UNITED STATES, published 1889 by E. & F. N. Spon.
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Seller's Description:
Very Good. Octovo hardcover in original brown cloth cover with gilt lettering on spine, clean and unmarked and unfoxed pages, the covers have wear at tips, top of spine chipping, missing endpaper, weak hinges, otherwise GOOD. Scarce copy of Mr. Babbage's book on logs. A "...mathematician, philosopher, inventor and mechanical engineer who originated the concept of a programmable computer.....credited with inventing the first mechanical computer that eventually led to more complex designs...difference engine (completed) for the 19th century." A historic book by the Father of the Computer.; 8vo 8"-9" tall; 202pp pages.
Add this copy of Table of Logarithms of the Natural Numbers From 1 to to cart. $199.00, good condition, Sold by mossback books rated 5.0 out of 5 stars, ships from Hartland, MI, UNITED STATES, published 1889 by E. & F. N. Spon.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
Good. Octovo hardcover in original brown cloth cover with gilt lettering on spine, clean and unmarked and unfoxed pages, the covers have wear at tips, top of spine chipping, missing endpaper, weak hinges, otherwise GOOD. Scarce copy of Mr. Babbage's book on logs. A "...mathematician, philosopher, inventor and mechanical engineer who originated the concept of a programmable computer.....credited with inventing the first mechanical computer that eventually led to more complex designs...difference engine (completed) for the 19th century." A historic book by the Father of the Computer.; 8vo 8"-9" tall; 202pp pages.
Add this copy of Table of Logarithms of the Natural Numbers From 1 to to cart. $239.00, very good condition, Sold by Mainly Books rated 5.0 out of 5 stars, ships from Silverdale, PA, UNITED STATES, published 1889 by E. & F. N. Spon.
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Very Good. Hardcover, no dustjacket, "Stereotyped Edition, " 202 pages + a 3-page list of Mr. Babbage's printed papers, a very clean, sound copy with no major flaws, mild rubbing at the corners is the only remarkable flaw, a collectible work by this English mathematician, inventor, philosopher and mechanical engineer who originated the concept of a digital programmable computer.