Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
onegirl
Group Title
Use the given graph to identify all xvalues at which the function is discontinuous.
 one year ago
 one year ago
onegirl Group Title
Use the given graph to identify all xvalues at which the function is discontinuous.
 one year ago
 one year ago

This Question is Closed

onegirl Group TitleBest ResponseYou've already chosen the best response.0
@rizwan_uet can you help?
 one year ago

onegirl Group TitleBest ResponseYou've already chosen the best response.0
@RadEn can u help?
 one year ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.1
Ok let's look at the first one. If we slide over to \(x=2\), the function is defined where the black dot is located. So the function value is 1 ish. But notice that if we try to move any further to the left, we have to `jump` up to grab the other line. This is called a `jump discontinuity`. The curve doesn't continue in one straight path. That's bad.
 one year ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.1
Around \(x=2\), the line curves down to negative infinity on the left, and up towards positive infinity from the right side of 2. We call this an `infinite discontinuity` or sometimes called an `asymptotic discontinuity`.
 one year ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.1
Then at \(x=4\) we have a `sharp corner`. It would probably be more accurate to describe it as a `cusp`, but whatever :) Sharp corners like that are bad! Discontinuity! I can't remember what type of discontinuity it is though :( hmm
 one year ago

onegirl Group TitleBest ResponseYou've already chosen the best response.0
okay how about for graph number two i'll look it up for the word at x = 4
 one year ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.1
Hmm just like the first graph, it looks like we have a `jump` at \(x=2\) yes? :)
 one year ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.1
Then we move over to \(x=2\). There are no problems are the point, only AT that particular point. It's missing!!! We call this a `removable discontinuity`.
 one year ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.1
Then at \(x=4\) we have a discontinuity that we saw in the first graph. Can you recognize it? :) hmm
 one year ago

onegirl Group TitleBest ResponseYou've already chosen the best response.0
yes the cusp thingee lol
 one year ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.1
no no no, not a cusp! :) There is no sharp corner. What's happening is, the line is going up up up on the right. and down down down on the left.
 one year ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.1
They draw a `pink line` to show that there is an asymptote located there. Meaning that our function does not exist in the pink area.
 one year ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.1
So like in the first graph, when we see an asymptote, we have an `infinite discontinuity`.
 one year ago

onegirl Group TitleBest ResponseYou've already chosen the best response.0
ohh okay got it
 one year ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.1
dw:1359671410605:dwHere is another form of the `infinite discontinuity` that you might see come up.
 one year ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.1
Sometimes the branches go the same direction. But that dotted line let's us know that the function isn't defined there. The branches go up up up getting closer and closer to one another as they approach infinity. But they will not connect, since the dotted line will always separate them. So it's an `infinite discontinuity`.
 one year ago

onegirl Group TitleBest ResponseYou've already chosen the best response.0
okay thank you
 one year ago
See more questions >>>
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.