Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing

This Question is Closed

nissnBest ResponseYou've already chosen the best response.0
\[\sum_{k=1}^{\infty}\left( 2^{k}+5^{k+1} \right)\]
 one year ago

satellite73Best ResponseYou've already chosen the best response.1
break in to two parts and add
 one year ago

satellite73Best ResponseYou've already chosen the best response.1
first one is \[\sum_{k=1}^{\infty}\frac{1}{2^k}=1\]
 one year ago

nissnBest ResponseYou've already chosen the best response.0
how did you find that? (Haven't done this in a long time)
 one year ago

nissnBest ResponseYou've already chosen the best response.0
the sum is 9/4 (after wolframalpha) but I don't know how to find it
 one year ago

sirm3dBest ResponseYou've already chosen the best response.1
the first term is a geometric series with first term 1/2 and ratio 1/2, the second term is a geometric series with first term 1 and ratio 1/5 use the formula \[S=\frac{ a_1 }{ 1r }\] to find the sum of an infinite geometric series
 one year ago

nissnBest ResponseYou've already chosen the best response.0
so then it is s =0.5/(10.5)=1 and 1/(11/5)=5/4 1+5/4 =9/4
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.