A community for students.
Here's the question you clicked on:
 0 viewing
My15girl
 one year ago
This is discrete functions. Can someone please help?? I can't figure out what I am doing wrong. I am supposed to get the indicated sum, but I keep doing something wrong. This is what series I have to work with x[15] for 0.3+0.003+0.00003+...... I know that a=0.3 and r=0.01 and n=15. so x[n] = a(r^n1)/r1
x[n] = 0.3((0.01)^151)/0.31
x[n] = 0.3((1))/7/10
but the outcome is 3/7. Is that the right outcome because the back of my text book says it's 10/33. And I don't understand what I am doing wrong. :/
My15girl
 one year ago
This is discrete functions. Can someone please help?? I can't figure out what I am doing wrong. I am supposed to get the indicated sum, but I keep doing something wrong. This is what series I have to work with x[15] for 0.3+0.003+0.00003+...... I know that a=0.3 and r=0.01 and n=15. so x[n] = a(r^n1)/r1 x[n] = 0.3((0.01)^151)/0.31 x[n] = 0.3((1))/7/10 but the outcome is 3/7. Is that the right outcome because the back of my text book says it's 10/33. And I don't understand what I am doing wrong. :/

This Question is Closed

klimenkov
 one year ago
Best ResponseYou've already chosen the best response.2What is \(0.01^{15}\)?

My15girl
 one year ago
Best ResponseYou've already chosen the best response.0that would be the common ratio or "r" to the exponent number of terms or "n"

klimenkov
 one year ago
Best ResponseYou've already chosen the best response.2Can you calculate this?

My15girl
 one year ago
Best ResponseYou've already chosen the best response.0Yes, when I calculate it I get 1.E30, then I subtract 1 and get 1

klimenkov
 one year ago
Best ResponseYou've already chosen the best response.2There is a mistake in the denominator. x[n] = 0.3((0.01)^151)/0.31

My15girl
 one year ago
Best ResponseYou've already chosen the best response.0wow, I am so clueless

klimenkov
 one year ago
Best ResponseYou've already chosen the best response.2Actually, there are two mistakes.

My15girl
 one year ago
Best ResponseYou've already chosen the best response.0Okay I see where I went wrong. Wow
Ask your own question
Sign UpFind more explanations on OpenStudy
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.