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NationalTutoringObservatory
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MathEd-PII

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8
volunteer
I'm sorry
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volunteer
I call Abian. OK, so L thankful leading, leading. This is leading power. This is leading cos yes, and here, so we're talking about even.
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volunteer
and here we are talking about on.
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volunteer
right
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volunteer
Like this and here leading coalition here we are talking about positive and here we are talking about negative. Remember here, I don't care about the value. I care only either positive or negative. Am I right?
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volunteer
Yes, so here, for example, even positive, let's say this is the very simple example and in fact in your textbook here that well
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volunteer
uh, the textbook asking you to memorize this one because this one here is
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volunteer
considered as
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volunteer
part of the library of graph that you need to memorize. So the graph is gonna look like this.
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volunteer
Right? So this one is Y and this one is. Now, so what happened if you haven't even leading power, but
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volunteer
negative
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volunteer
leading collab. So we got Y here equal to let's say minus X^2 here. So in this case, OK, so it's gonna be like this.
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volunteer
Am I gonna
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volunteer
OK, so keep in mind here, do you still remember something about the vertical reflection.
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volunteer
band.
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volunteer
you still remember
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volunteer
like, uh, neck vertical reflection. This is actually from here to here is
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volunteer
the case of
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volunteer
vertical reflection.
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volunteer
OK, now, so here, here we're talking about on here, on the second no so we get why here equal to x here cube. Am I correct?
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volunteer
Yes. So this one is odd, am I right?
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volunteer
here and then as far as the coy is concerned, is a positive. Yes, so we are looking at the glove that looks like this.
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volunteer
Right, so this one is white and this one is ac.
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volunteer
right? And here what happened here if you have that
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volunteer
the power is on, but the cofi is negative. It's minus X cube here, then the graph is gonna look like this.
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volunteer
Sounds good, right, so you have to memorize this one then, because this summarize everything the concept about polynomial with respect to the leading power and leading coop and positive, negative, or even. Sounds good.
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volunteer
Do you have anything else, Alex?
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[ { "pii_type": "PERSON", "surrogate": "Alex", "start": 27, "end": 31 } ]
student
nope.
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volunteer
OK, so I hope this session is very useful for you.
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volunteer
One question, Alex, if you will, I'm just curious here. Are you logging in from your school or from your home?
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[ { "pii_type": "PERSON", "surrogate": "Alex", "start": 14, "end": 18 } ]
student
home
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volunteer
OK, so you are not going to school? Are you homeschooling?
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student
no
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volunteer
OK.
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volunteer
OK then. So I assume that you are homeschooling with your parents?
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student
No i go to school.
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volunteer
OK then. OK then. So if you don't have anything else, then I'm going to close this session again. I hope this session is very useful. And then here, I wish you a good day, a successful day today in your school. Thank you so much and say hello to your parents.
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student
Bye
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volunteer
Bye-bye
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volunteer
Hi. How are you?
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student
I'm fine and you?
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volunteer
Good. How can I help?
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student
I want to work on related rates stuff cause i'm having a little trouble with it
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volunteer
Ok. I am going to put my mic and speaker on. You can if you want to or are able to.
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volunteer
All right, I've got my mic and speaker on
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volunteer
helps me free up a little bit
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volunteer
Do you have a specific example of a problem you would like to work?
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student
Yeah, I'll put on the board.
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volunteer
OK.
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student
Can you see it
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volunteer
Yeah, I haven't seen it yet, not yet.
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student
It's not showing up
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volunteer
Not yet. I'm looking
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volunteer
not seeing it anywhere
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volunteer
Sometimes it takes a little while to load.
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student
Mhm
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volunteer
There it is
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volunteer
So let me read this
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volunteer
OK
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volunteer
So I'm getting a picture of a rocket going up.
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student
Mhm
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volunteer
Camera 5000 ft away.
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volunteer
when the rocket 1000 ft above the launch pad, its velocity 600 ft per second. Find the necessary rate of change of the camera's angle.
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volunteer
as a function of time.
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volunteer
so that it stays focused on the rocket.
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volunteer
So
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volunteer
do you want to try to draw a little picture of it.
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volunteer
or would you like me to take a shot at it?
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student
Yeah, I tried to picture part.
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volunteer
You said you already did that
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student
No, I said no, you can try it.
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volunteer
OK. So here I go.
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volunteer
All right.
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volunteer
I'm having trouble. Hold on, please.
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volunteer
Nope.
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volunteer
All right. It's very crude.
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volunteer
All right, so
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volunteer
here's our angle theta.
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volunteer
Uh, we'5000 ft away.
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volunteer
and
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volunteer
at the moment
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volunteer
that we're looking at it
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volunteer
the rocket 1000 ft above the launch pad.
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volunteer
It's up there
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volunteer
and it's going up 600 ft per second.
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volunteer
So we could say that the tangent of the angle is always
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volunteer
the opposite
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volunteer
over the adjacent
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volunteer
Yeah.
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student
All right, can I stop you for a second?
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volunteer
Yeah
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student
Yeah, so basically, in the drawing, where is the camera?
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volunteer
The cameras
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volunteer
right over on the right here
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student
OK. And where's the launch pad?
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volunteer
Launch pads right over here.
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volunteer
on the left
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student
OK. So
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student
when it says a camera is positioned 5000 ft from the launch pad. That means like from the right side or left side.
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volunteer
It doesn't really matter. I drew it, I drew it on the right side, but it could be on the left side.
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