In mathematics, the infinite series ⁠ 1 / 2 ⁠ + ⁠ 1 / 4 ⁠ + ⁠ 1 / 8 ⁠ + ⁠ 1 / 16 ⁠ + ··· is an elementary example of a geometric series that converges absolutely. The sum of the series is 1.

Below are multiple fraction calculators capable of addition, subtraction, multiplication, division, simplification, and conversion between fractions and decimals. Fields above the solid black …

In this really simple guide, we'll teach you exactly what 1/2 + 1/4 is and walk you through the step-by-process of how to add two fractions together. To start with, the number above the line in a …

令A=1+1/2+1/4+……+1/（2^n） 则2A=2+1+1/2+1/4+……+1/（2^（n-1）） 所以2A-A=2-1/（2^n） 也即1+1/2+1/4+……+1/（2^n）=2-1/（2^n） 当n趋向于无穷时,A=2 所以极限是2

我们有 \ln \left( n+1\right) -\ln n <\dfrac{1}{n} 两边求和，我们有 ln(n+1) <1/1+1/2+1/3+1/4+……+1/n. 容易的， \lim _{n\rightarrow +\infty }\ln \left( n+1\right) =+\infty ， …

Write each expression with a common denominator of 4 4, by multiplying each by an appropriate factor of 1 1. Tap for more steps... Combine the numerators over the common denominator. …

1+1/2+1/4+.+1/2的n次方=?谁知道这个通用的公式是什么? 这是等比数列求和. Sn=a1 (1-q^n)/ (1-q) 其中a1为首项,q为公比,n为项数. 解析看不懂？ 免费查看同类题视频解析. 1+1/2+1/4+.+1/2的n …

QuickMath will automatically answer the most common problems in algebra, equations and calculus faced by high-school and college students. The algebra section allows you to expand, …

2017年8月3日 · 规律是后一位的值等于前几位数的乘积。 1*2=2. 1*2*2=4 1*2*2*4=16……

2011年11月19日 · 2013-07-06 1,1,2,4,7( )找规律,在括号内填上适当的数 20 2017-12-16 1，2，3，2，4，6，3，8，9找规律。 2013-01-30 1,1,2,2,4,4,7,7,——，——找规律 49 …