 | James L. Connolly (mathematician.) - 1835 - 264 σελίδες
...Progressions are best understood by Algebra. The first term, the last term, and ike number of terms, given to find the sum of all the terms. RULE. Multiply...the two extremes by the number of terms, and half that product will be the answer; or multiply the sum of the two extremes by half the number of terms;... | |
 | John Rose - 1835 - 192 σελίδες
...— How is the common difference found when the extremes and terms are given ? When the extremes and number of terms are given, to find the sum of all the terms. Multiply half the sum of the extreme, by the number of terms, and the quotient will be the answer,... | |
 | Charles Guilford Burnham - 1837 - 266 σελίδες
...price, multiplied by the number of books will give the whole cost; 5X4=20 cents. Therefore — When the first and last terms, and the number of terms are given, to find the sum of the series. RULE. Multiply half the sum of the extremes by the number of terms ; the product will be... | |
 | Luther Ainsworth - 1837 - 298 σελίδες
...What is the fourth case in geometrical progression ? A. It is when the first term, the common ratio, and the number of terms are given, to find the sum of all the terms. Q. What is the RULE in this case ? A. Raise the ratio to a power whose index shall be equal to the... | |
 | Luther Ainsworth - 1837 - 306 σελίδες
...CASE FOURTH. Q. What is the fourth case in arithmetical progression ? A. It is when the two extremes, and the number of terms are given, to find the sum of the series. Q. What is the RULE in this case ? A. Add the two extremes together, and multiply their... | |
 | Daniel Adams - 1839 - 268 σελίδες
...the price, 152£ cts. X 100 = 15250 cts. = S Ans. $152'50, whole cost. " ) Hence, when the extremes and the number of terms are given, to find the sum of all the terms, — Multiply £ the sum of the extremes by the number of terms, and the product will be the answer... | |
 | Daniel Adams - 1839 - 276 σελίδες
...the price, 152 £ cts. X 100 = 15250 cts. = \ Ans. $152'50, whole cost. ~ ) Hence, when the extremes and the number of terms are given, to find the sum of all the terms, — Multiply £ the sum of the extremes by the number of terms, and the product will be the answer... | |
 | Nathan Daboll - 1839 - 220 σελίδες
...increase Ans. Daily increase 2 mile: CASE III. Thf first term, last term, and number of terms gwent t find the sum of all the terms. • RULE. Multiply the sum of the extremes by the number of term: and half the product will be the answer. EXAMPLES, 1. A man bought... | |
 | Daniel Adams - 1840 - 278 σελίδες
...the price, 152£ cts. X 100 = 15250 cts. = > Ans. $152'50, whole cost, " ) Hence, when the extremes and the number of terms are given, to find the sum of all the terms, — Multiply £ the sum of the extremes by the number of terms, and the product will be the answer... | |
 | Frederick Emerson - 1840 - 302 σελίδες
...common difference. The sum of all the terms. PROBLEM. i. The extremes and number of terms being e;iven, to find the sum of all the terms. RULE. Multiply the sum of the extremes by the number of the terms, and half the product will be the sum of all the terms. See Theorem... | |
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Hence, when the extremes and the number of terms are given, to find the sum of all the terms, — Multiply £ the sum of the extremes by the number of terms, and the product will be the answer 10. 
