| Samuel Webber - 1801
...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 series of the same kind with the given one be placed under it in... | |
| Jeremiah Paul - 1801 - 222 sider
...term, gives the last term. Then, multiply the sum of the extremes by the number ef terms, ana half-the **product will be the sum of all the terms. EXAMPLES. 1. Bought** 30 yards of broadcloth, at l:s. for the first yard, 3s. for the second, 5s. tor the third &c. increasing... | |
| Nicolas Pike - 1809 - 300 sider
...and the number of terms being gi-oent to fnd the fum of all ths terms, RULE. Multiply the fum of the **extremes by the number of terms, and half the product will be the** anfwer. EXAMPLES. i. The extremes of an arithmetical feries are 3 and 39, and the number of terms i... | |
| Zachariah Jess - 1810 - 210 sider
....', by the common difference, and to „that produit add the first term, the sum is the last term.. **Secondly, Multiply the sum of the two extremes by the number of terms, and half the** produit will be the sum of the series, EXAMPLES. i -Bought 19 yards of shalloon, at \d. for the first... | |
| 1811 - 198 sider
...less 1, by the common difference, and ,to the product add the first teim, the sum is the last term. 2. **Multiply the sum of the two extremes by the number of terms, and half the product will be the sum** qf all the terms. f EXAMPLES. •I. The first term 01 a certain series in anumicucoi progression is... | |
| 1817 - 198 sider
...difference, and to the product add the first term, the sum is the last term. > 2. Multiply the sum ef **the two extremes by the number of terms, and half...product will be the sum of all the terms. EXAMPLES. 1** . The first term of a certain series in arithmetical pro gression is 2, the common difference is 2,... | |
| Nathan Daboll - 1817 - 240 sider
...are best understood by an algebraic process, md are here omitted. :, 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 of an arithmetical series is 3, the last term 23, and the number... | |
| Nathan Daboll - 1818 - 240 sider
...them are best understood by an algebraic process, nnd are here omitted. 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 of an arithmetical series is 3, the last term 23, and the... | |
| 1818 - 251 sider
...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 term of an arithmetical progression is 5, the last term, 60, and the... | |
| Etienne Bézout - 1824 - 219 sider
...by the common difference ; to the product add the first term, and their sum will be the last term. **Multiply the sum of the two extremes by the number...product will be the sum of all the terms. EXAMPLES. 1.** The first term of a certain series in arithmetical progression is 2, the ratio between the terms is... | |
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