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 Bøker Bok 1–10 av 110 på Suppose that a*=n, then x is called the logarithm of n to the base a : thus the logarithm...
Suppose that a*=n, then x is called the logarithm of n to the base a : thus the logarithm of a number to a given base is the index of the power to which the base must be raised to be equal to the number. The logarithm of n to the base a is written log.
Elementary trigonometry - Side 110
av James Hamblin Smith - 1870 - 224 sider
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## The elements of plane trigonometry, Volum 1

John Charles Snowball - 1837
...the logarithm of the number n to the base a ; or, the logarithm of a number to a given base is that power to which the base must be raised to give the number. If a logarithmic formula be generally true, whatever value the base may be of, the logarithms of the...
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## The elements of algebra, Volum 2

...and x'1 in (x - ¿ж3 + ¿a? - £r'+ &c.)~". CHAPTER VII. LOGARITHMS, AND EXPONENTIAL THEOREM. 101. DEF. The logarithm of a number to a given base is the index of that power to which the base must be raised, in order to become equal to the number: so that, if a*...
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## Plane trigonometry. [With] Solutions of examples

...= .2471663, tan 13° 54' = .2474750? CHAPTER VIII. ON LOGARITHMS, AND THE EXPONENTIAL THEOREM. 131. DEF. The logarithm of a number to a given base is the index of that power to which the base must be raised, in order to become equal to the number: so that, if a"...
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## Plane trigonometry. [With] Solutions of examples

...(54°) and ADB (36°). Determine AB. CHAPTER VIII. ON LOGARITHMS, AND THE EXPONENTIAL THEOREM. 131. DBF. The logarithm of a number to a given base is the index of that power to which the base must be raised^ in order to become equal to the number: so that, if ax...
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## Arithmetic and algebra in their principles and application

Barnard Smith - 1857
...to the BASE a ; hence the following definition : " The Logarithm of a number to a given base is that power to which the base must be raised to give the number." The logarithm of N to the base a is thus expressed, log. N. The logarithm of any number depends upon...
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## Algebra

Isaac Todhunter - 1858 - 496 sider
...that XXXVIII. LOGARITHMS. 531. Suppose a" = n, then x is called the logarithm of n to the • a; thus the logarithm of a number to a given base is the index of the power to which the base must be raised to be equal to the number. The logarithm of и to the base a is written logди; thus logдii = x expresses...
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## An elementary treatise on plane trigonometry

Richard Dunkley Beasley - 1858
...base a. This relation is also thus expressed x = loga N. Hence we obtain the following definition. The logarithm of a number to a given base, is the...index of the power to which the base must be raised in order to be equal to the given number. 53. In the equation N= ax, let a be some constant quantity...
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## Plane trigonometry

Isaac Todhunter - 1860
...have given in the Algebra. 132. Suppose a* = n, then x is called the logarithm ofnto the base a; thus the logarithm of a number to a given base is the index of the power to which the base must be raised to be equal to the number. The logarithm of n to the base a is written logaw; thus logaw = x expresses...
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## The elements of algebra. [With] Answers

Robert Fowler - 1861
...base, every number from 0 to зэ may be regarded as a power of that base. The " Logarithm" of a number is the index of the power to which the base must be raised to produce that number. If 4 be the base, then 42 = 16) And these equalities may be written log. 16 =...
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## An Introduction to Plane and Spherical Trigonometry

Alfred Challice Johnson - 1865 - 150 sider
...and angles of the two triangles are supplements, the one of the other. 45 CHAPTER V. On Logarithms. Def. — The logarithm of a number to a given base...index of the power to which the base must be raised to be equal to the number; thus, in the equation a" = N, a: is called the logarithm of N to the base a....
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