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I need some help with Calculus *UPDATED QUESTION

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Captain Crunch

Joined: 08 Nov 2004
Posts: 3234

0.00 Silvarrr

Posted: Mon Jan 30, 2006 12:11 pm Post subject:

Visual Tactics wrote:

Uh oh, i'm taking calc next year... Sad

have fun

it basically kicks your ass.

EMP wrote:

EDIT:
what are accumulation functions? (used in calc classes, nothing of that money thing because I tried googling it. )

are u talking about area accumulator functions? things like the trapezoid rule, simpson's rule, and riemann sums?

u can find areas under curves by taking the integral of the function and setting the limits to where u want the area.

B[x] wrote:

I whipped out my old TI-83+ and the only thing I found was a InvNorm function. When I plotted it, it gave me a weird scatter of points. I pulled out my TI-89 Titanium (which is what I use for my classes - required) and after another quick search, couldn't even find any sort of Inverse function. Oh well, most of the stuff I do now is either conceptual or requires a program like Mathematica to do.

ti83s and ti89s can both draw inverses of functions. here's how to do it on the ti83, since i dont know how to use a ti89 that well yet.

first, enter your function into y1
then under [2nd][draw], there should be a command called drawInv (if u cant find it, use the catalog)
select that and then go to [vars][y-vars][y1]
hit enter and it should draw the inverse

if u want to clear the picture of the inverse, u have to go back to the draw menu, and there's a command for clearing in there.

btw david, InvNorm is a command for statistics courses. it finds the area under the normal curve from points that u specify. the areas under the normal curve have to do with statistical distributions of normal populations.
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B[x] wrote:

-bryan- wrote:

but this is kind of.. a stupid thread

You're a stupid thread.

EMP

Joined: 26 May 2005
Posts: 628
BNet Acct/Realm: sequences (Ladder-USEast)

0.00 Silvarrr

Posted: Mon Jan 30, 2006 6:22 pm Post subject:

Thanks for the input guys. I figured out how to draw inverses in teh TI-89.

go to catalog and look up DrawInv then proceed to plug in the equation you want to be drawn the inverse of. press enter. bingo

edit: yo forsaken, you seem to know a lot about everything. what do you do for life?
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Captain Crunch

Joined: 08 Nov 2004
Posts: 3234

0.00 Silvarrr

Posted: Tue Jan 31, 2006 12:10 pm Post subject:

EMP wrote:

edit: yo forsaken, you seem to know a lot about everything. what do you do for life?

im still a high school student. going to college next year. hurray for being the youngest mod Wink

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B[x] wrote:

-bryan- wrote:

but this is kind of.. a stupid thread

You're a stupid thread.

B[x]

Joined: 04 May 2004
Posts: 6130
BNet Acct/Realm: Retired

0.00 Silvarrr

Posted: Tue Jan 31, 2006 4:45 pm Post subject:

forsaken wrote:

btw david, InvNorm is a command for statistics courses. it finds the area under the normal curve from points that u specify. the areas under the normal curve have to do with statistical distributions of normal populations.

I guess I'll cover that this semester then - I have to take Stat I as a BS filler course. Also, Calculus I isn't that hard, it's Calculus III that really bites your ass. Even still, that's doable; I made it through and now I'm onto the "fun and interesting" topics.
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