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Βιβλία Βιβλία 1 - 5 από 5 για CASE tt 344. Given the first term, the ratio, and the number of terms, to find the....
" CASE tt 344. Given the first term, the ratio, and the number of terms, to find the sum of the terms. Let a denote the first term, r the ratio, n the number of terms, and i- the sum of the terms. Then, S = a + ar + ar... "
A Key to Dilworth's Arithmetic: Wherein Every Question is Worked Out at Full ... - Σελίδα 140
των A teacher of arithmetic in New-York - 1812 - 312 σελίδες
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New Elementary Algebra: In which the First Principles of Analysis are ...

Benjamin Greenleaf - 1864 - 324 σελίδες
...Given the first term, the ratio, and the number of terms, to find the sum of the terms. Let a denote the first term, r the ratio, n the number of terms, and S the sum of the terms. Then, 5= a + ar + at3 + ar8 + ar*-* + ai~- » (1) Multiplying by r, rS=ar +...

Treatise on the elements of algebra

James Bryce - 1872
...ratio and unity ; observing that the last term becomes zero, in an infinite decreasing series. Let a be the first term, r the ratio, n the number of terms, and s the sum of the series ; then * = a + ar + ar' + ar* + ar* . . . . + ar*~ l. Multiplying both sides...

New Elementary Algebra

Benjamin Greenleaf - 1878
...Given the first term, the ratio, and the number of terms, to find the sum of the terms. Let a denote the first term, r the ratio, n the number of terms, and i- the sum of the terms. Then, S = a + ar + ar' + ar* ...... + a r— 2 + a r— * (1) Multiplying by r, rS = ar + <jr2...

New Elementary Algebra: Designed for the Use of High Schools and ..., Βιβλίο 1

Benjamin Greenleaf - 1879 - 336 σελίδες
...Given the first term, the ratio, and the number of terms, to find the sum of the terms. Let a denote the first term, r the ratio, n the number of terms, and iS the sum of the terms. Then, S = a + ar + ar!-f ar3 + a r»-2 + a r"-1 (1) Multiplying by r, rS =...

Elementary Algebra with a Table of Logarithms

Julius Lederer Neufeld - 1920 - 383 σελίδες
...per cent each year, what is its value at the end of 5 years? THE SUM OF A FINITE GEOMETRICAL SERIES Let a = the first term r = the ratio n = the number of terms I = the last term s = the sum of the terms Then s = o + ar + or2 + ar3 + ar2 + . . + ar"-1 (1) Multiply...




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