Adv. Math Exam tomorrow...

[Dominus]

I've been studying so long I'm gonna be crapping quadriatics for a week. I'm actually so physically tired from studying that I won't be able to sleep. If you're a religious person, pray to your God(s) that I get above 62%.

Just needed a place to vent for a minute.
Back to rational expressions for me...

[socalgal]

My goodness, Dominus. I had to look up that term, and it's not even in Webster's II Collegiate Dictionary!

Best of luck with it, and saying a little prayer for you. I have a feeling you'll hit better than 62%, too. http://www.sysopt.com/forum/smile.gif

[Dominus]

Seriously? Quadriatics is like this:

If diver jumping from a diving board follows the path denoted by h=-5t^2+6t+3, where "h" is meters, and "t" is seconds,then how high is the diving board, and when does the diver hit the water?

Seems impossible at first, but it can be solved.



[This message has been edited by Dominus (edited 01-25-2000).]

[BBA]

Man...that took me back to Nuke school in the navy! I try not to think of stuff like that anymore...computers are much more fun!

[socalgal]

One word: Yikes! http://www.sysopt.com/forum/wink.gif

[Dominus]

Heh.

Anyone care to solve that equation in my last post? http://www.sysopt.com/forum/smile.gif

C'mon! It's something out of my grade 11 math book!

[richamies]

High and quickly?

If you tell me what the ^ means I will attempt it so you can all laugh at me...

[Dominus]

^2 means squared in ASCII math.

It's hard to translate formulae without a character map installed.

[This message has been edited by Dominus (edited 01-25-2000).]

[richamies]

Its been about 7 years since I did this and I was cack back then.

Does the next line look like

h+3 = -5t^2 + 6t?

[Dominus]

Afraid not http://www.sysopt.com/forum/frown.gif

Hint: it's a Maximum problem.

[richamies]

well that gets me stumped! Never mind eh? I guess I cant be wonderful at everything can I?

I get stuck on fractions let alone diving boards. Does the fact that I can't swim very well get me out of this one?

[Dominus]

The diving board is 3m high, and he hits the water after about 1.59 seconds.

[richamies]

OK after much brain scrathcing I think I have got it now :- The diving board is 3m high, and he hits the water after about 1.5....oh.....you already figured it.

bummer.

http://www.sysopt.com/forum/wink.gif

Best of luck to you anyway Dominus - I will keep my fingers crossed for you http://www.sysopt.com/forum/smile.gif

[This message has been edited by richamies (edited 01-25-2000).]

[tonym]

Dominus,

Eureka!!!!

You'll kick the **** of every quadratic equation that you meet if you remember that the solutions are contained in:

ax^2 + bx + c = 0 and there are two particular solutions, x1 and x2.

x1,x2 = (-b +/- (b^2 - 4ac)^1/2)/2a and
x1 and x2 are real and unequal if b^2-4ac >0,
x1 and x2 are real and equal if b^2-4ac=0,
x1 and x2 are conjugate imaginary numbers if b^2-4ac <0.

And the height of the diving board is the *initial condition* h(t=0) = 3 (by examination).

Remember one thing while you take the **** test: the correct answer isn't as important as the path to the answer. I've had students in the past that elaborated with high-level math and described the solution to a problem that they framed incorrectly in the first assumption. Don't get caught up in *analysis paralysis*! Keep your cool/do your best and 62% will be long gone from your radar screen!


Relax. Go get 'em...


Tony

[Dominus]

Tee minus 6 hours to the final and I have yet to get a wink of sleep.

Not a good thing, but I can wing it.

[Dominus]

Well, the final is over with, and I can confindently say that I've passed.

Now I just have the Physics exam on Friday.

Oh well.

[U-96]

Way to go Dominus!!!!

Now get some sleep before the next one! http://www.sysopt.com/forum/smile.gif

U-96

[hd581]

4 1/2 years, eh? Here at GT, only 26% of the incoming freshmen graduate in 4 years. Sadly, I fall in the 74% that just didn't make that cut.

[Dominus]

I hit calculus next year. And hopefully I've qualified for Adv. Math next year too.

One question though Wiz: what's "ln" stand for in that equation?

[alpha]

I don't think they teach this in first year...

[tonym]

Good news, Dominus!

What kind of of physics...like classical mechanics or atomic or???


Tony

[Dominus]

Just mechanics.

Easy stuff.

[deep_sky]

ln stands for the natural log of a number.

[BBA]

You mean it takes over a year to get to log's? Heck, we did it in 2 weeks! ( A little faster paced, but only 10% graduated after 2 years of schooling! I made it! )

[Wiz]

Kettering University runs on a 4 1/2 year plan.

BBA, i've had logs before, but now its logs in calculus...

Dominus, go as far as you can in math. makes life easier

[socalgal]

Way to go, Dominus! http://www.sysopt.com/forum/biggrin.gif Good luck then on the Physics, though it sounds like you won't need it. http://www.sysopt.com/forum/wink.gif

[Wiz]

i really enjoy physics, though i'm kinda worried that our entire world can be solved through math.

[Dominus]

Why would that worry you?

[BBA]

Well, it really can't...we just think it can by guestimating interactions on a subatomic level.

Truth is, it all comes down to a "strong nuclear force" we can only describe.

Once your at that, nothing else makes sense.

It always blew my mind how much we know for how little we really know for sure!

[reddog4629]

Quadriatics?



[This message has been edited by reddog4629 (edited 01-26-2000).]

[Dreamboat Annie]

This is all way over my head! I envy you all. Math was alway EXTREMELY difficult for me.

Can anyone answer this: why is it that many people who excel in Algebra do poorly in Geometry and visa versa? I was one that did okay in Geometry, but sucked in Algebra. Actually Geometry was the only math that made any sense to me--very logical. Algebra seemed too abstract and I really struggled. I think I have a fear of math now.

[Dreamboat Annie]

I almost forgot...good luck on your physics test, Dominus! We're all rootin' for ya!

[Wiz]

Dominus, wait til you hit calculus...

right now i am doing sutff like this:

Dx=(2x^3)(ln x)+3


the answer for that is

6x^2+ln x

only 4 1/2 more years til i get my engineering degree!

[BillyB]

Anyone here take Discrete Math?? I personally have more trouble with that than any of the others. EVERYTHING has to be proven (including the quadratic equation), just an answer is not good enough. Monomorphism, Epimorphism, Induction, Combinatorics, Permutations (If you've had it these words will probably invoke feelings of dread http://www.sysopt.com/forum/smile.gif ). What a nightmare!! Some people excel at it but here at UofD it has about a 58% fail rate and is required for ALL comp sci majors.

[socalgal]

Ahh! quadratics!

Webster's II: quadratics: involving terms of the second degree at most.

Sure... easy for Webster's to say. http://www.sysopt.com/forum/wink.gif

[Dominus]

A mathematician I may be, but a good speller I am not.

The teacher always said quad-dree-at-tics, so I assumed thats the way it was spelt.

[Donkey]

Okay! where are the physics questions??? i'm doing a PhD in molecular physics at the moment after graduting with a degree in maths/physics so i was annoyed that i didn't check this post out earlier or i could have shown off and answered your original problem.
Well if you need any help with the physics... http://www.sysopt.com/forum/smile.gif
donkey

[BillyB]

Well, Donkey, hopefully you'll be around for my next Discrete question then http://www.sysopt.com/forum/smile.gif

[Dominus]

Any theories on FTL travel then, Donkey?

[Wiz]

i was always bad at geometry. those proofs will kill ya, but i am good at algebra. i guess its how our minds view the problems.