A community for students.
Here's the question you clicked on:
 0 viewing
Babynini
 one year ago
Check please!
Babynini
 one year ago
Check please!

This Question is Closed

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0is that correct? I feel like I did something wrong xD

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.3doesn't look correct

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.3scroll down http://www.wolframalpha.com/input/?i=focus+20x%5E2%2B4y%5E2%3D5

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0hrrm but I want to know the process of how to get there ( so i learn it better) :P

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.3\[20x^2+4y^2 = 5\] start by dividing both sides by \(5\)

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0oooh oh I forgot to get one on the right side

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0\[\frac{ 20x^2 }{ 5 }+\frac{ 4y^2 }{ 5 }=0\]

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.3\[20x^2+4y^2 = 5\] dividing both sides by \(5\) gives \[\frac{20x^2}{5}+\frac{4y^2}{5} = \frac{5}{5}\] which is same as \[\frac{x^2}{1/4} + \frac{y^2}{5/4}=1\]

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.3\(\frac{5}{5}\) equals \(1\) not \(0\)

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.3\[\frac{x^2}{1/4} + \frac{y^2}{5/4}=1\] \(a^2 = 5/4\) \(b^2 = 1/4\)

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0Wouldn't it be 4/5? not 5/4?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0No remember an ellipse as following \[\frac{ x^2 }{ a^2 } + \frac{ y^2 }{ b^2 }=1\]

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0...then it'd be a^2 = 1/4 b^2 = 5/4 ? o.o

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.3which ever is big is \(a\)

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.3big : major : \(a\) small : minor : \(b\)

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0Yeah yeah, I gotcha now :)

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.35/4 is greater than 1/4 so the thing under \(y\) is \(a\) and consequently the ellipse stretches along \(y\) axis (vertical)

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.3\(a^2 = 5/4\) \(b^2 = 1/4\) next use the chart for vertical ellipse dw:1433224590567:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It's best if you graph it, then everything becomes obvious say we have \[\frac{ x^2 }{ 9 }+\frac{ y^2 }{ 5 }=1\] dw:1433224525998:dw such a bad drawing but notice i square root 9 and 5 \[a^2 = 9 \implies \sqrt{9} = 5~~~~~b^2 = 5 \implies \sqrt{5}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Just an easy example to show you whats going on

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0hrm yeah. I think this one just messed me up because it's turned the other way.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yeah ganeshie put up a nice chart :P

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0I can't see the chart o.o it looks fuzzy.

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0ok so for major and minor axis usually it's 2a for major 2b for minor same here?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yeah that sounds good

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0soo it'd be 2a = 5/4 2b=1/4 ?? because they don't like those answers

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0No, \[a = \frac{ \sqrt{5} }{ 2 }\] 2 will just get cancelled

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0. what? a = 5/4 a^2 = 25/16

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It's a game of substitution, what is a?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Right, so now multiply that by 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes :) I actually put that up earlier

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0haha thanks for putting up with me xP i'm incorrigible. meeh.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It's cool, ganeshie has taught me how to be patient :P

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0Yall are amazing lol I hate it when people i'm trying to help don't get it. So I offer a thousand apologies xD

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[b^2 = 1/4\] right? so do same as above

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0yay! for the first time in forever, I get an answer right :D

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Np :) sorry to butt in like that ganeshie, I just love ellipses.

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0I have unlimited piles of ellipses on my homework *cough cough

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0though your hate for me might just over ride your love for ellipses

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I have one emotion, and that's batman.

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0You...are a true sir.

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.3he is a true super hero

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.3length major axis : \(\sqrt{5}\) length of minor axis : \(1\) what about others

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0thanks to you guys :)
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.