A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
 one year ago
Can someone PLEASE explain how to solve this? The fraction at the end completely throws me off!!
Pic related: http://prntscr.com/12xgei
 one year ago
Can someone PLEASE explain how to solve this? The fraction at the end completely throws me off!! Pic related: http://prntscr.com/12xgei

This Question is Closed

terenzreignz
 one year ago
Best ResponseYou've already chosen the best response.2Okay... So, essentially \[\huge \frac{f}g(x) = \frac{f(x)}{g(x)}\] is the key to understanding this...

SephI
 one year ago
Best ResponseYou've already chosen the best response.1I deducted it and f(x) = 3 and g(x) = 7 But, my answer isn't 7... My answers are: 3 3 1 1 I tried dividing 3 by 7 and 7 by 3, but that didn't work.

terenzreignz
 one year ago
Best ResponseYou've already chosen the best response.2f(x) = 3? I take it you meant f(2) indeed, f(2) = 3 I suggest you retry g(2)

SephI
 one year ago
Best ResponseYou've already chosen the best response.1I thought: \[\frac{ f }{ g }(2) = \frac{ f(2) }{ g }\] Then I'd find f(2) Then I'd plug in 2 to g(x) and get 7.

terenzreignz
 one year ago
Best ResponseYou've already chosen the best response.2Ahh. No. \[\huge \frac{f}g(x) = \frac{f(x)}{g(x)}\\\huge \frac{f}g(2)=\frac{f(2)}{g(2)}\]

terenzreignz
 one year ago
Best ResponseYou've already chosen the best response.2It does bug me when they use shorthand notation resulting into unclear stuff... but yeah, that's Maths for you :P

SephI
 one year ago
Best ResponseYou've already chosen the best response.1Here is what I did: f(x) = 3x  3 f(x) = 3(2)  3 f(x) = 6  3 f(x) = 3 Plug it into g g(x) = 2(3) + 1 g(x) = 7 But the answer isn't seven. Am I doing it wrong?

terenzreignz
 one year ago
Best ResponseYou've already chosen the best response.2because you're not supposed to get g(f(2)) Just g(2)

SephI
 one year ago
Best ResponseYou've already chosen the best response.1\[\frac{ 3(2)  3 }{ 2(2) + 1 }\] Is that it?

SephI
 one year ago
Best ResponseYou've already chosen the best response.1\[\frac{ 3 }{ 3 } = 1\]

SephI
 one year ago
Best ResponseYou've already chosen the best response.1Okay, and can you explain the g(f[4]) thingy?

terenzreignz
 one year ago
Best ResponseYou've already chosen the best response.2That's when you first get the result of f(4) and then plug it into g(x)

SephI
 one year ago
Best ResponseYou've already chosen the best response.1And if you had f(g[4]) You'd first get g and plug it into f?

terenzreignz
 one year ago
Best ResponseYou've already chosen the best response.2You'd first get g(4) and then plug it into f(x) , yes :)

SephI
 one year ago
Best ResponseYou've already chosen the best response.1I see. It's all about order. But sometimes it's so unclear ;;

terenzreignz
 one year ago
Best ResponseYou've already chosen the best response.2Hopefully clearer now, if only a little bit :)
Ask your own question
Ask a QuestionFind 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.