 | Alexander Malcolm - 1718 - 396 σελίδες
...Remainder is the other middle Term. Profofition 3d, IN an Arithmetical Progrejjion, (V. Definition 5th) the Sum of the Extremes is equal to the Sum of any two Terms, at equal Diilance from them ; or to double the middle Term (if the Number of Terms are odd; ) confequently... | |
 | Jeremiah Day - 1814 - 304 σελίδες
...The sums will be Here we discover the important property, that, 428. In an arithmetical progression, the sum of the extremes is equal to the sum of any other two terms equally distant from the extremes. In the series of numbers above, the sum of the first... | |
 | 1817 - 214 σελίδες
...called the extremes. JVote. — In any series of numbers in arithmetical progression, the sum of the two extremes is equal to the sum of any two terms equally distant from them ; as in the latter of the above series 6-fl=4-f-3, and=5-{-2. Whei. the number of terms is odd, the... | |
 | William Enfield (M.A.) - 1821 - 302 σελίδες
...difference taken as many times as there are terms, before it. (22.) 2nd. The sum of the extremes is always equal to the sum of any two terms equally distant from them ; or double the mean term, if the progression contains an odd number of terms. (21.) 3rd. If the sum... | |
 | Stephen Pike - 1824 - 212 σελίδες
...called the extremes. Note. — In any series of numbers in arithmetical progression, the sum of the two extremes is equal to the sum of any two terms equally distant from them; as in the latter of the above series 6 + 1=4+3, and =5+2. When the number of terms is odd, the double... | |
 | James L. Connolly (mathematician.) - 1829 - 266 σελίδες
...last terms are called the extremes. In a series of even numbers, the sum of the two extremes will be equal to the sum of any two terms, equally distant from them; as 2, 4, 6, 8, 10, the two extremes beinj* 2+10=12,804+8=12; but if the number of terms be odd, the... | |
 | Alexander Ingram - 1830 - 458 σελίδες
...y — d, y ; where the sum of any two corresponding terms is a-\-y. Cor. — The double of any term is equal to the sum of any two terms equally distant from it. PROP. III. — The sum of any number of terms in arithmetical progression is equal to the sum of... | |
 | 1831 - 210 σελίδες
...called the extremes. Note. — In any series of numbers in Arithmetical progression, the sum of the two extremes is equal to the sum of any two terms equally distant from them; as in i! the latter of the above series 6+1=4+3, and =5+2. i When the number of terms is odd, the double... | |
 | Martin Ruter - 1831 - 190 σελίδες
...&,c. — the common dil ference is 3. In any series in Arithmetical Progression, the sum o the two extremes is equal to the sum of any two terms equally distant from them, or equal to double the mid die term when there is an uneven number o£ terms i lie series. Thus, in... | |
 | Thomas Conkling (W.) - 1831 - 302 σελίδες
...half the number of terms. * In any series of numbers, in arithmetical progression, the sum of the two extremes is equal to the sum of any two terms equally distant from then}; as in the series above, 2 +• 10, is equal to 4 +• 8, &c. : ' When the number of terms is... | |
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In any series of numbers in arithmetical progression, the sum of the two extremes is equal to the sum of any two terms equally distant from them; as in the latter of the above series 6 + 1=4+3, and =5+2. 
