- #1

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It is just how can you comment on the key features of the graph ?

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- #1

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It is just how can you comment on the key features of the graph ?

- #2

quasar987

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Surely there is an example in your textbook of such commenting. Usually one points out at which points there are local and global minima and local and global maxima, where there are saddle points, where there are inflexions points. Also relevant may be to indicate the global behavior of the map: is it bounded above? below? Is there asymptotic behavior?

- #3

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I was given a graph of V'(x) and is asked to comment on the graph.

The graph has an x - int as 1.55, part of a graph on LHS of this point is above the x-axis and RHS is below until it reaches 2pi (also an x- int)

Thx for ur help

- #4

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The Volume increases as the height increase. dV/dh = -(A^2)/ 4pih^2

- #5

Mark44

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No it doesn't. According to the equation you show, the volume

The Volume increases as the height increase. dV/dh = -(A^2)/ 4pih^2

Have you graphed dV/dh versus h? What questions are you supposed to answer?

- #6

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Idk how to graph the ques

sorry ty 4 ur help

sorry ty 4 ur help

- #7

Mark44

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Also, what are you asked to do in this problem? Please try to answer in complete words, not textspeak.

- #8

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Sketch the graph of dV/dh and give comment on the key features of this graph

Sorry for giving unclear info ! Thx 4 ur time LOL

- #9

Mark44

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The equation you just gave has V as a function of x, not h, so it doesn't make any sense to talk about dV/dh unless there is some relationship between x and h.

Sketch the graph of dV/dh and give comment on the key features of this graph

Sorry for giving unclear info ! Thx 4 ur time LOL

Are you supposed to graph dV/dx and talk about its key features?

What key features are you supposed to comment on?

- #10

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my bad , sorry i was in hurry ! You were rite ! It is dV/dx

- #11

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it just say sketch the graph and comment on key feature

- #12

Mark44

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For this function,

[tex]V = \frac{(92\pi - x)^2 \sqrt{4\pi - x^2}}{24\pi^2}[/tex]

- Calculate dV/dx.
- Comment on key features of the graph of dV/dx.

Have you asked your teacher for clarification on what is meant by "key features?"

- #13

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Ty , Mark !

- #14

Mark44

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If you did, we might be a little further along in this problem. With 14 posts in this thread, I can't see that you have actually done anything.Do you know any rules of differentiation? The ones that would be very useful here are the constant multiple rule, product rule, chain rule, in that order. After you have found the derivative dV/dx, then you can graph it. When you have the graph, you can decide what you think are key features of it.

Speaking of the problem, it seems to have shifted around somewhat in this thread. You first described it this way in post 4:

Then it turned into this in post 8:dV/dh = -(A^2)/ 4pih^2

Are you asking about two different problems?V=(92pi-x)^2sqrt(4pix -x^2) )/ (24pi^2)

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