A community for students.
Here's the question you clicked on:
 0 viewing
DLS
 3 years ago
Limits
DLS
 3 years ago
Limits

This Question is Closed

DLS
 3 years ago
Best ResponseYou've already chosen the best response.0\[\lim_{x \rightarrow \infty }\frac{x^4+2x^3+3}{2x^4x+2}\]

DLS
 3 years ago
Best ResponseYou've already chosen the best response.0x+1 is a factor of this right?

TomLikesPhysics
 3 years ago
Best ResponseYou've already chosen the best response.1I think it is one half. Because you got up and downstairs and x^4 which I think is a special case and in which the limit approaches the coefficents before these two identical powers of x which is 1upstairs and 2 downstairs  1/2.

TomLikesPhysics
 3 years ago
Best ResponseYou've already chosen the best response.1If you would use the L`Hopital Rule you would end up with it.

TomLikesPhysics
 3 years ago
Best ResponseYou've already chosen the best response.1Do you want to see the calculation?

DLS
 3 years ago
Best ResponseYou've already chosen the best response.0\[\lim_{x \rightarrow \infty }\frac{3x^4+4x^3+}{4x^4+x^2+7}\] I'm trying to do this with the same concept but i'm getting 5/7 @TomLikesPhysics ?

DLS
 3 years ago
Best ResponseYou've already chosen the best response.0\[\frac{12x^3+12x^2}{16x^3+2x}\]

TomLikesPhysics
 3 years ago
Best ResponseYou've already chosen the best response.1the one where you got 5/7

DLS
 3 years ago
Best ResponseYou've already chosen the best response.0but how is it gaining infinity/infinity?

TomLikesPhysics
 3 years ago
Best ResponseYou've already chosen the best response.1How it gains infinity? You take the limit where x goes to infinity. So both terms grow. Is that what you meant?

DLS
 3 years ago
Best ResponseYou've already chosen the best response.0it is something+infinity is it samething?

DLS
 3 years ago
Best ResponseYou've already chosen the best response.0\[\lim_{x \rightarrow \infty } \frac{x^3+x^2+4}{x^2+8}\] are you gettng 1 here?

TomLikesPhysics
 3 years ago
Best ResponseYou've already chosen the best response.1Here it should be infinity. You got downstairs an x^2 and upstairs and x^3. So the x^3 "is stronger" and wins and therefore the whole thing goes to infinity.

DLS
 3 years ago
Best ResponseYou've already chosen the best response.0No,I solved according to what you said and got this: \[\frac{3x^2+2x}{2x}\] so I got 3x+1=1?

TomLikesPhysics
 3 years ago
Best ResponseYou've already chosen the best response.1How do you end up with 3x+1=1 if you got a fraction?

DLS
 3 years ago
Best ResponseYou've already chosen the best response.0\[\frac{3x^2}{2x} + \frac{2x}{2x}\]

DLS
 3 years ago
Best ResponseYou've already chosen the best response.0I ended up with: \[\frac{3}{2}x+1\]

TomLikesPhysics
 3 years ago
Best ResponseYou've already chosen the best response.1k but if you got 3x+1 and let x approach infinity (taking the limit) than you end up with infinity.

DLS
 3 years ago
Best ResponseYou've already chosen the best response.0okay! if it was 1/x and x==> infinity it would have been 1 RIGHT?

TomLikesPhysics
 3 years ago
Best ResponseYou've already chosen the best response.1limit x> inf. of ax+b is alsways infinity. The b does not matter in the long run and nether does a while x gets bigger and bigger.

TomLikesPhysics
 3 years ago
Best ResponseYou've already chosen the best response.1If you got 1/x and x gets bigger and bigger you would get a limit which is 0.

TomLikesPhysics
 3 years ago
Best ResponseYou've already chosen the best response.11/x as x approaches infinity is 0. 1/x as x approaches 0 is infinity.

DLS
 3 years ago
Best ResponseYou've already chosen the best response.0\[\lim_{x \rightarrow 0} \frac{\cos7x\cos9x}{\cos3x\cos5x}\] These ones?

TomLikesPhysics
 3 years ago
Best ResponseYou've already chosen the best response.1I don´t know. Have not seen this one before.^^ Never dealt with limits and sine or cosine.

DLS
 3 years ago
Best ResponseYou've already chosen the best response.0okay..book did a direct step after this : \[\frac{2\sin8xsinx}{2\sin4xsinx} \]

TomLikesPhysics
 3 years ago
Best ResponseYou've already chosen the best response.1^^ First time I see that kind of stuff. I´m sorry but with that I can not help you.
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.