14 replies to this topic

[Nexus]

My last post is locked, i dont know why so, im retrying with this one. I need help with the summary table in the Graph & Tables application, i need to know the meaning of the little arrows that are displayed in the results table (One pointing up, other pointing down, other to left and the last one to right). The manual mention nothing about it. Please, help.

George.

[CrimsonCasio]

hmm, its locked? odd... are you sure? I'll delete the old one if your sure.

are you talking about the graph controler? click them and you can move the graph around.

[Nexus]

i?m talking about the summary table, when you analize any function (Using the Graph & Table application) you ca generate a data table and/or a Summary Table, if you write y=x^2 and get the summary table, in the line of f(x) detail appears some little curved arrows pointing in different directions (They are not control arrows, they are symbols that mean something !!!. Thats the question...what is the meaning of the arrows !!!

Please Help !!

[CrimsonCasio]

im afraid I dont know anything about that... have you looked in your manual?

[qwerty841]

is it something like
| or +--> ?
+-> |

[Nexus]

The manuals says nothing at all about the issue, i'd asked to CASIO Support for some clue and they says "Refer to the manual". I'm just now be aware that the most of the people do not use this very expensive tool capabilities in deep. I like Casio devices but once more they left lost ends that generate disappointment in the users. Not mentioning the "cleaver" answer from the support staff.

Conclusion : I'll think twice the next time that i buy a new Calculator from this Brand.

[CrimsonCasio]

hehe... never call Casio tech support. I had to tell them what the classpad was when I called them and for 2 weeks they thought I was talking about a watch

this forum is the best casio tech support you can get.

I'll get the answer for you (via casio )

[Nexus]

ohhh!! thanks a lot, im thinking that -after all- i'll be not regreat of sign in this forum.

George



P.D.: About Casio customer services

[CrimsonCasio]

glad to help, as soon as I hear back from them I'll post the answer

btw: you really cant blame the tech support guys too much, casio is such a big company that they cant be expected to know everything (though I wish casio would/could refer people here, im sure it would save some major headaches)

[Overlord]

if it's the arrows in the "variation table" (i dont know how you call it), like "enter" arrows, it's a arrow that describes the evolution of the graph, resuming the two first derivatives :

- if the function is growing or descreasing
- if the function is concave (like y=-x?) or convex (like y=x?) (not sure about the traductions)

[CrimsonCasio]

ok, the answer from casio is:

 _
|
(up and right)	derivative  is falling towards 0　



_
  |
(right, then down)	derivative  is falling past 0　



|_
(down then right)	derivative  is rising towards 0　



_|
(right then up)	derivative  is rising towards 0　

[Lovecasio]

Hi.
The function of the sumary table ( I think ) is telling us when the function decrease, increase, maximum, minium on its graph. As Nexus said, the setting is "Display 2nd Derivative" or f''(x). Turn of this, and then in sumery table, you should see only "raise up" and "fall down" symbol.
Fall down => Decrease in ( a , b ).
Raise up => increase in ( a , b ).
If you turn on "Display 2nd Derivative" or f''(x), the table will be more specific. You will know the maximum, minium, and inflection point.

[Nexus]

Hey Partners!!, i thank you all for the support, with your guidelines im ready to use properly this function. Im exploring in detail each possibility of this great machine and soon i hope to have the opportunity to pay you back with some usefull contribution in this board.

Again Thanks

George.

[Nexus]

Hey crimson !! im wrong or did you repeat the meaning of the last arrow??, please confirm, thanks.

[CrimsonCasio]

oops, the last one is "past 0"