 | Eva F. Buker - 1915 - 436 σελίδες
...by figures; as 3, 4, 7, 19, etc. In algebra they are often represented in another more general way, by the first letters of the alphabet; as a, b, c, d, etc. A letter may stand for any known number, and a result be obtained by the use of letters which... | |
 | Arthur Schultze - 1919 - 618 σελίδες
...appear later, numbers are frequently denoted by letters ; as, a, m, x. 2. Known numbers are iisually represented by the first letters of the alphabet ; as, a, b, c. Unknown numbers are usually represented by the last letters of the alphabet; as, x, у, г. 3. The... | |
 | Walter Burton Ford, Charles Ammerman - 1920 - 334 σελίδες
...known numbers are represented by letters are called literal equations. The known letters are generally represented by the first letters of the alphabet, as a, b, c, etc. Literal equations are solved by the same processes as numerical equations. EXAMPLE. Solve the... | |
 | Walter Burton Ford - 1922 - 286 σελίδες
...quantities are represented by letters are called literal equations. The known quantities are generally represented by the first letters of the alphabet, as a, b, c, etc. Literal equations are solved by the same processes as numerical equations. EXAMPLE. Solve the... | |
 | Joseph Ray - 1848 - 252 σελίδες
...quantities are those whose numerical values are not known. ART. 17. Known quantities are generally represented by the first letters of the alphabet, as a, b, c, &c.; and unknown quantities by the last letters, as x, y, z. ART. 18. The following are the principal... | |
 | Joseph Ray - 1848 - 260 σελίδες
...quantities are those whose numerical values are not known. ART. 17. Known quantities are generally represented by the first letters of the alphabet, as a, b, c, &c.; and unknown quantities by the last letters, as x, y, z. ART. 18. The following are the principal... | |
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Quantities, or those whose values are given, when not expressed by figures, are usually represented by the first letters of the alphabet, as a, b, c. 
