+...+[(\frac{2n}{n} )^3-\frac{2n}{n} ](\frac{2}{n} )](/tpl/images/1854/7073/c667c.png)
Answers: 2
![\displaystyle \left[\left(\frac{2}{n}\right)}^3-\frac{2}{n}\right]\left(\frac{2}{n}\right)+...+\left[ \left(\frac{2n}{n}\right)^3-\frac{2n}{n}\right]\left(\frac{2}{n}\right)](/tpl/images/0830/1243/06074.png)
![\displaystyle =\frac{2}{n}\left(\left[\left(\frac{2}{n}\right)^3-\frac{2}{n}\right]+...+\left[\left(\frac{2n}{n}\right)^3-\frac{2n}{n}\right]\right)](/tpl/images/0830/1243/f3187.png)
. The last term is given by 
. Because at the last term, our initial term i is equal to n, we can replace the extra n with i for our summation.![=\displaystyle \sum_{i=1}^{n} \frac{2}{n}\left(\left[\left(\frac{2i}{n}\right)^3-\frac{2i}{n}\right]\right)](/tpl/images/0830/1243/29f56.png)
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 16:20, amortegaa805
Which best explains why this triangle is or is not a right triangle?
Answers: 1
Mathematics, 21.06.2019 17:00, ladnerhailey16
What is sin 7x/4 ? i need on this urgent trig
Answers: 1
Mathematics, 21.06.2019 19:30, cutegirl0987
Given a: b and b: c, find a: b: c. write the ratio in simplest form. a: b=6: 10 and b: c=21: 33
Answers: 1
Do you know the correct answer?
Find the sigma notation of the following sum:...
Questions in other subjects:
Mathematics, 01.04.2020 16:32
Mathematics, 01.04.2020 16:32
Mathematics, 01.04.2020 16:32
Chemistry, 01.04.2020 16:32
