Hmmm Calculus Help (Read 364 times)

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I'm glad I'm not doing math anymore.
Is it our duty to die for governments and for gods?
Is it our privilege to slave for market and for industry?
Is it our right to follow laws, set to scare and to oppress?
Is it a gift to stay in line and will it take away the blame?
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Thanks GW

Thanks to you, the future scares me.
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I think I'm going to be a chemical engineer (chemistry was actually one of my good classes), so knowing which parts of Calculus I'll actually need to use would be beneficial, too.

Im in my first year of chemical engineering. There was no calculas involved this year just a basic math course.

I dunno if this helps for you but the courses i have first year are
General Math I & II
Chemistry I & II
Physics I
Electricity I & II (II becomes Industrial Systems)
Microbiology I
Chemical Laboratory I & II (I was theory and most work was done on the computer using excel and word, and II was actual labs)
GEN ED Elective (you choose what you want but all are pretty shitty)

In chemistry II there is a little bit of derivatives but its coming for me now as in the last 2 weeks of school :D

For me my Calculas I course starts in second year.


but then again this will prolly be different for you because we live in different locations
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Mmm, Integlawls. Go CARCARUS! I had actually just got back from calc camp, the irony. We reviewed and took a mock AP test. I GOT A FRIGGING 3. GAAAH. I was 10 points from getting a 4. If only I did better on the free-response...

Anyways, Omcifer is right -- plugged the sucker into the graphing calculator and took the integral, then checked the numeric answer with some main screen arithmetic. But yes, long division is *far* quicker. In either case, you'll need to know Algebra 3-4? ln conversions (which I had to look up because I was a dumbass and took the class in the summer so I could get into pre-calc sophomore year).

Firemage -- if my notes are correct, there is a subtraction sign between csc and cot.

Scotudu --> ln|sinu| + c
Stanudu --> -ln|cosu| + c --> ln|secu| + c
Ssecudu --> ln|secu + tanu| + c
Scscudu --> ln|cscu - cotu| + c

I was told a good way to memorize the last two was to remember the derivatives of them.
For the first, secxtanx
For the second, -cscxcotx

Notice how the derivative of csc has a "-" sign. In the same fashion, the integral of csc will have one, too.

Remember, this is just a means to remember the rule -- it withholds no actual mathematic value.

EDIT:

This is probably a horrible place to ask this question, but does anyone know how to use calc for collision detection in programming? A friend of mine is working on the engine for an rpg we are programming from scratch. While the main screen will be tile-based, the battle screen will be a sidescroller, so there must be collision detection between all sorts of shapes (a circle for a meteor attack, a square for a character (with a circle for the head), etc.).

EDITEDIT:

Wait a sec you had a minus sign in front of the constant. Not having really taken alg 3-4, could that minus sign be put in between csc and cot? In which case, you would have been right.
Last Edit: April 09, 2008, 04:50:53 pm by Juris
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Heh, I'm a M.S. in Stats, so I pretty much have calculus shoved down my throat no matter where I go.  A few years ago, when I actually took the courses, I actually liked math and calc because it came so naturally for me.  A few courses of calculus theory and analytical math really changed my perspective on that rather quickly (never take real analysis; it sucks no matter which uni you go to) :/.

@Juris: I don't think collision detection really used calculus (at least it didn't the last time that I checked).  It would be rather impractical since most collision detection algorithms can be done with basic algebra and geometry, and solving integrals is inefficient when you have enough polygons.  I could have mis-remembered my game theory class, though, so don't quote me on that.
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i love my calc classes but hate my physics classes

calc forever
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