百度试题 结果1 题目【题目】Write the sum in sigma notation.1/2+2/3+3/4+4/5+⋯+(19)/(20) 相关知识点: 试题来源: 解析 ∑_(i=1)^n(i+1)
The series sum is found using various methods. But for that, we need to write the series in the sigma notation form. Once we have that form, we can check the convergence and divergence of the series ...
解析:x+(x^2)2+(x^3)3+(x^4)4+⋯The general term is (x^k)k, beginning with k=1. This is also an infinite series. We use the symbol ∞ for infinty and write the series using sigma natation: ∑^∞_(k=1)((x^k)k)....
Write the geometric series {eq}\displaystyle 2 + \frac{1}{2} + \frac{1}{8} + \frac{1}{32} + ... {/eq} Using the Sigma Notation {eq}\displaystyle (\sum_{n = 1}^{\infty} ar^{n- 1}) {/eq} then...
【解析】(1 ∑_(k=0)^62^k .解析:1+2+4+8+16+32+64k-0T his is the sum of powers of 2, beginning with 2, ori, and ending with 2, or 64. Sigma notation is 2k-0(2)∑(-1)(2k.解析:-2+4-6+8-10k=1Disregarding the alternating signs, we see that this is the sum of ...