A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
 2 years ago
find & simplify the difference quotient
[f(x+h)f(x)]/ h, where h cannot = 0
for the given funtion: f(x)=2x^2+4x+3
 2 years ago
find & simplify the difference quotient [f(x+h)f(x)]/ h, where h cannot = 0 for the given funtion: f(x)=2x^2+4x+3

This Question is Closed

cwrw238
 2 years ago
Best ResponseYou've already chosen the best response.1this is 2(x+h)^2+4(x+h) +3  (2x^2+4x+3)  h

refusetofail
 2 years ago
Best ResponseYou've already chosen the best response.0yes, I realise that.. but after I group and simplify, I end up with h=2 but that's not the answer in my textbook, I'm not sure where I went wrong:/

cwrw238
 2 years ago
Best ResponseYou've already chosen the best response.1i don't quite understand what u want here  this function produces the derivative of the f(x) when h > 0 i.e. limit of it as h> 0 . its not about finding a value of h

ksaimouli
 2 years ago
Best ResponseYou've already chosen the best response.1dw:1353883607543:dw

refusetofail
 2 years ago
Best ResponseYou've already chosen the best response.0well the answer is apparently, 2x +h + 6 and I don't understand how to get this

cwrw238
 2 years ago
Best ResponseYou've already chosen the best response.1the answer should be 4x + 4 + h

cwrw238
 2 years ago
Best ResponseYou've already chosen the best response.12(x+h)^2+4(x+h) +3  (2x^2+4x+3) = 2x^2 + 4xh + 2h^2 + 4x + 4h + 3  2x^2  4x  3 = 4xh + + 4h + 2h^2 dividing this by h gives 4x + 4 + 2h  i was wrong in my last post

refusetofail
 2 years ago
Best ResponseYou've already chosen the best response.0but that's still not the answer I was given.. is it wrong then?

refusetofail
 2 years ago
Best ResponseYou've already chosen the best response.0turns out the ansser given is wrong, thanks :)
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.