Math Problem Statement
Sejam S_1, S_2, S_3 respectivamente as somas dos n, 2n, 3n primeiros termos da mesma PA. Sendo a o primeiro termo e r a razão, podemos afirmar que S_3-S_2-S_1 depende: a) Somente de a e de r. b) Somente de r e de n. c) Somente de a e de n. d) Nem de a, nem de r e nem de n. e De a, de r e de n.
Solution
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Math Problem Analysis
Mathematical Concepts
Arithmetic Progression (PA)
Sum of Series
Algebraic Manipulation
Formulas
Sum of the first k terms of an arithmetic progression: S_k = (k/2) * (2a + (k - 1)r)
Simplification of expressions involving sums of series
Theorems
Properties of Arithmetic Progressions
Suitable Grade Level
Grades 10-12
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