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

wendylisetteBest ResponseYou've already chosen the best response.0
i just write it out ?
 5 months ago

amistre64Best ResponseYou've already chosen the best response.1
thats calculator for: 1x10^(99)
 5 months ago

amistre64Best ResponseYou've already chosen the best response.1
your comma button has an EE atop it, shift to get it
 5 months ago

wendylisetteBest ResponseYou've already chosen the best response.0
oh i see it now , hold up
 5 months ago

austinLBest ResponseYou've already chosen the best response.0
Do you have a TI89? These bad boys have an infinity BUTTON!! :D
 5 months ago

wendylisetteBest ResponseYou've already chosen the best response.0
oh no i have a 84 /:
 5 months ago

amistre64Best ResponseYou've already chosen the best response.1
ti84 is the most ill go ... after that they started having to have terabytes for the instruction manuals and i gave up :)
 5 months ago

wendylisetteBest ResponseYou've already chosen the best response.0
@amistre64 it says EE but you said it was IE99
 5 months ago

amistre64Best ResponseYou've already chosen the best response.1
it not my fault they cant type lol
 5 months ago

austinLBest ResponseYou've already chosen the best response.0
Button likely says EE, but on screen it should say E
 5 months ago

amistre64Best ResponseYou've already chosen the best response.1
the output on the screen is still: one: 1 2nd, , : E 99: 99
 5 months ago

wendylisetteBest ResponseYou've already chosen the best response.0
is it a one or an I ?
 5 months ago

amistre64Best ResponseYou've already chosen the best response.1
they might have done that to distinguish it fromthe alpha E key :/
 5 months ago

amistre64Best ResponseYou've already chosen the best response.1
an i is not a real numerical value
 5 months ago

amistre64Best ResponseYou've already chosen the best response.1
i^k is one of 4 values ... why are you needing an infinity?
 5 months ago

wendylisetteBest ResponseYou've already chosen the best response.0
Find the sum of the infinite geometric series, if possible. Show steps, if possible. \sum_{{j}={1}}^{\infty}4 \cdot 0.5^{j1}
 5 months ago

wendylisetteBest ResponseYou've already chosen the best response.0
\[\sum_{{j}={1}}^{\infty}4 \cdot 0.5^{j1}\]
 5 months ago

amistre64Best ResponseYou've already chosen the best response.1
\[\sum_{{j}={1}}^{\infty}4 \cdot 0.5^{j1}\] \[\sum_{{j}={1}}^{\infty}4 \cdot 0.5^{j}~.5^{1}\] \[\frac{4}{.5}\sum_{{j}={1}}^{\infty}0.5^{j}\]
 5 months ago

wendylisetteBest ResponseYou've already chosen the best response.0
aha now what ? lol
 5 months ago

amistre64Best ResponseYou've already chosen the best response.1
theres a formula for this ....
 5 months ago

wendylisetteBest ResponseYou've already chosen the best response.0
whats the formula ? im sorry my teacher doesnt give me all this info /:
 5 months ago

amistre64Best ResponseYou've already chosen the best response.1
\[\frac{1r^k}{1r}\] if r < 1, then the limit as k to infinity is \[\frac{1}{1r}\]
 5 months ago

wendylisetteBest ResponseYou've already chosen the best response.0
whats r though ? the common ratio ?
 5 months ago

wendylisetteBest ResponseYou've already chosen the best response.0
but would it be possible to find the sum ?
 5 months ago

amistre64Best ResponseYou've already chosen the best response.1
let me rechk my thought tho ... S = r + r^2 + r^3 + ... + r^n rS =  r^2  r^3  ...  r^n  r^(n+1)  (1r)S = r + 0 .......................... r^(n+1) S= r  r^(n+1)  1  r
 5 months ago

amistre64Best ResponseYou've already chosen the best response.1
if r < 1 then that exponented part goes to 0 leaving us: S = r/(1r) for the sum
 5 months ago

amistre64Best ResponseYou've already chosen the best response.1
might be better stated the r < 1, but why nitpick
 5 months ago

amistre64Best ResponseYou've already chosen the best response.1
\[\frac{4}{.5}\sum_{{j}={1}}^{\infty}0.5^{j}\] \[\frac{4}{.5}~\frac{.5}{1.5}\] \[\frac{4}{.5}=8\]
 5 months ago

amistre64Best ResponseYou've already chosen the best response.1
http://www.wolframalpha.com/input/?i=sum+4%28.5%29%5E%28n1%29%2C+n%3D1+to+inf
 5 months ago

wendylisetteBest ResponseYou've already chosen the best response.0
thanks soooo much !
 5 months ago

amistre64Best ResponseYou've already chosen the best response.1
youre welcome, as far as i know the ti84 does not have an infinite sum function
 5 months ago

wendylisetteBest ResponseYou've already chosen the best response.0
yes im aware haha
 5 months 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.