 | Charles Vyse - 1785 - 350 pages
...three of which being given, the other two may be found. PRO- I « PR-O POSITION I. When two Extremes and the Number ,of Terms are given, to find the Sum of all the Series or Terms. RULE. Multiply the Sum of the two Extremes into the Number of Terms, and divide the... | |
 | 1801 - 446 pages
...sum of all the terms. . , PROBLEM I. , 1'te frit term, the last term, and the number of terms behtg given, to find the sum of all the terms. RULE.* Multiply the sum of the extremes by the number of terms,, and half the product will be the answer. EXAMPLES. * Suppose another... | |
 | Charles Vyse - 1806 - 342 pages
...Ratio of If. What is the Share of the eldest ? PROPOSITION III. When the first Term, Ratio, and Numbar of Terms, are given, to find the Sum of all the Terms. RULE. Find the last Term as before, from which take the first : divide the Remainder by the Ratio, less one,... | |
 | Daniel Adams - 1810 - 190 pages
...price, 132* cts. \ . X 1UO = 13230 cts. = $132'30, whole cost. , $ *"'• Hence, when the extremes and the number of terms are given, to find the sum of all tfta terms, — Multiply one half the sum of the extremes by the number of terms, and the product will... | |
 | Jeremiah Joyce - 1812 - 274 pages
...others may be easily found. I. When the first term a, and the last .term z, and th« number of terms n, are given, to find the sum of all the terms, *. RULE. Multiply the sum of the extremes by the number ofte/mi, and divide by 2, the quotient is the ansu-er: or n a. + z X — = s.... | |
 | Samuel Webber - 1812 - 260 pages
...5. The sum of all the terms. PR0BLEM 1. Tke first term, the last term, and the number of terms being given, to find the sum of all the terms. RULE.* / Multiply the sum of the extremes by the number of terms, ami half the product will be die vinswer. EXAMPLES. 1. The first term... | |
 | 1818 - 264 pages
...5. The sum of all the terms. PROBLEM I. The first term, the last term, and the number of terms being given, to find the sum of all the terms. RULE. Multiply the sum of the extremes by the number of terms,," and half the product will be the answer. EXAMPLES. 1. The first... | |
 | George G. Carey - 1818 - 602 pages
...the other two may l»e foiled. st: L THE LEAST TERM, THE GREATEST TERM, AND THE NUMBER OF TERMS BEING GIVEN, TO FIND THE SUM OF ALL THE TERMS. RULE. Multiply the sum *f tbe greatest a*4 least terns by half the number of tersw, or by tbe whole jtumber of terms, anil... | |
 | Zadock Thompson - 1826 - 176 pages
...difference, and the sum of all the terms. Problem I. The first term, the last term, and the number of terms given, to find the sum of all the terms. RULE.* — Multiply the sum of the extremes by the number of terms, and half the product will be the answer. Examples. 1. The first term... | |
 | Roswell Chamberlain Smith - 1827 - 216 pages
...diminishes. PROBLEM I. — The first term, the last term, (ie the two extremes) and the number of terms given to find the sum of all the terms. RULE. — Multiply the sum of the extremes by half the num. Чег of terms, the product will be the answer. EXAMPLES. — How many times... | |
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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. 
