Tính tổng $A = \frac{1}{2} + \left( \frac{1}{2} \right)^2 + \left( \frac{1}{2} \right)^3 + \ldots + \left( \frac{1}{2} \right)^{25}$

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Câu 6: [VDC] (1,0 điểm)
Tính tổng

$A = \frac{1}{2} + \left( \frac{1}{2} \right)^2 + \left( \frac{1}{2} \right)^3 + \ldots + \left( \frac{1}{2} \right)^{25}$

Tính tổng A=12+(12)2+(12)3+…+(12)25 A = \frac{1}{2} + \left( \frac{1}{2} \right)^2 + \left( \frac{1}{2} \right)^3 + \ldots + \left( \frac{1}{2} \right)^{25}