 | Zachariah Jess - 1810 - 222 σελίδες
...14; so 4 + 10=14; and 6 + 8=14; or 3, 6, 9, 12, 15; where 3+15=18; also 6+12=18; and 9+9=18. CASE 1. The first term, common difference, and number of terms...; RULE. First, Multiply the number of terms, less .', by the common difference, and to „that produit add the first term, the sum is the last term..... | |
 | 1811 - 210 σελίδες
...distant from the middle term ; as An the former of the foregoing series 6x2=2 + 10, and =t 4 + 8. CASE 1. The first term, common difference, and number of terms...find the last term, and sum of all the terms. RULE. 1 . Multiply the number of terms, less 1, by the common difference, and ,to the product add the first... | |
 | Zachariah Jess - 1813 - 228 σελίδες
...3+15=18 ; also ß+ 12^18; ana 9+9=18. CASE I*' The first term, common difference, and number of terra* given, to find the last term, and sum of all the terms...; RULE. First, Multiply the number of terms, less r, by tfee common différence, and to that product add the first term, the sum is the last term. Secondly,... | |
 | 1817 - 214 σελίδες
...middle term ; as in the former of the foregoing series 6 x 2—2-1-10, and «=4+8. CASE 1. The fiist term, common difference, and number of terms given,...find the last term, and sum of all the terms. RULE. 1. Multiply the number of terms, less 1, by the common difference, and to the product add the first... | |
 | James Maginness - 1821 - 378 σελίδες
...the number of terms 19; what is the last term? By formula 9. 19 — 1 X 2 + 3 = 39. Ans. PROBLEM 10. The first term, common difference, and number of terms given, to find the sum of the series. If the first term is 3, the common difference 2, and number of terms 19; what is... | |
 | Jacob Willetts - 1822 - 200 σελίδες
...Fifthly, the sum of all the terms ; Any three of which being given, the other two may be found, CASK 1 . The First term, common difference, and number of terms given to find the last term, and the sum of all the terms. RFLE. First, Multiply the number of terms, less 1, by the common .difference,... | |
 | Nicolas Pike - 1832 - 538 σελίδες
...«hue mice of the payments is IJJ. : What is the bt payment ? Ans. £2 1 Is. 6d. PROBLEM VIH. Tlie first term, common difference, and number of terms given, to find the sum of the seriet. RULE. •*' • To (hi first term add the product of the number of terms less 1... | |
 | Nicolas Pike - 1822 - 536 σελίδες
...common difference of (he payments is KM. : What is the laet payment ? Ans. X-' 11s. 6d. PROBLEM VIH. The first term, common difference, and number of terms given, to find ttie sum of the series. RtLE. To the first term add the product of the number of terras Tess t by half... | |
 | Stephen Pike - 1824 - 212 σελίδες
...the former of the foregoing series 6x2=2 + 10, and =4+8. CASE 1. The first term, common difi'erence, and number of terms given, to find the last term, and sum of all the terms. RULE. 1. Multiply the number of terms, less 1, by the common difference, and to the product add the first... | |
 | Zachariah Jess - 1824 - 228 σελίδες
...CASE i. The first term, common difference, and number of term's given, to find the last term, a»d sum of all the terms; RULE. First, Multiply the number of terms, less 1, by the common difference, and to that product add the first term, the sum is the last term. Secondly,... | |
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Multiply the number of terms, less 1, by the common difference, and to the product add the first ; term, the sum is the last term. 
