Math

Rapto, you ever done an experiment in physics about the temperature of a squash ball affecting its bounce?

I've been a math/science geek all my life. Those scholarships got me thru college.

What did you take at college? :O

Aaron wrote:

Rapto, you ever done an experiment in physics about the temperature of a squash ball affecting its bounce?

I can't say I have. First semester uni physics is grade 11 stuff, but I might do that kind of stuff next semester.

Shit sucks. My coursework is due in about 8 hours and I can't for the life of me conclude or evaluate it RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRAAAARRRRRGH.

Also, as far as I know, there's no equation for bounce height that takes pressure, volume, mass, or anything like that into account, so there is hardly any maths in my experiment, but it's getting there

I hope you figure it out try yahoo answers

My math final is tomorrow at 8 am, I'm so fucked. I also have a chem final in the afternoon, which I haven't done much review for.

What topics are on your math exam? Good luck buddy

It's honours calc I

It's kinda like proving everything you did in high school calc, but with new functions and using proper notation. proofs suck.

I thought this topic said "Meth"

Still a good topic.

So I walked out of that exam thinking that I'd have to retake the course... if you don't pass the final, you don't pass the course.

But, marks were posted, and I passed!!!!!!!!!!!

pizza wrote:

I'm writing an exam about vectors and planes and such the day after tomorrow.

oooh, vectors! I like those.

holy shit math is getting hard as fuck.

There are these intense integrations where you make double subtitutions and shit (x to u to t)

oh, and these are all fucking trigs as well. This is probably going to be easy looking back on the course (it always is), but right now

raptorsaurus wrote:

holy shit math is getting hard as fuck.

There are these intense integrations where you make double subtitutions and shit (x to u to t)

oh, and these are all fucking trigs as well. This is probably going to be easy looking back on the course (it always is), but right now

I remember my first Calculus course...

but seriously Calculus sucks

cooljayhu wrote:

raptorsaurus wrote:

holy shit math is getting hard as fuck.

There are these intense integrations where you make double subtitutions and shit (x to u to t)

oh, and these are all fucking trigs as well. This is probably going to be easy looking back on the course (it always is), but right now

I remember my first Calculus course...

but seriously Calculus sucks

Yeah, it's a pain, but I like math, when I have the time to sit down and really understand it. But usually it goes by really fast and just becomes stressful. I have ten questions left on the assignment... at this pace my friday night will be gone.

I had to take like 5 math courses in 2 years for my engineering degree and 4 of them were calculus

Somebody teach me integration by parts ohhh my godddd.

Because I'm doing further maths, I do modules with integration by parts in differential equations but we haven't covered it in normal maths, so our teacher quickly shows it to us, but I don't exactly get it.

raptorsaurus wrote:

holy shit math is getting hard as fuck.

There are these intense integrations where you make double subtitutions and shit (x to u to t)

oh, and these are all fucking trigs as well. This is probably going to be easy looking back on the course (it always is), but right now

Everything you said here is fucking true as fuck.

Also, have you learnt sinh, cosh, tanh etc. yet? They're fun.

Aaron wrote:

Somebody teach me integration by parts ohhh my godddd.

Because I'm doing further maths, I do modules with integration by parts in differential equations but we haven't covered it in normal maths, so our teacher quickly shows it to us, but I don't exactly get it.

integration by parts, I think that's the one with U and V, right, you make 2 substitutions.

Well:

u dv = uv - int ( v du)

example: int ( x sin(2x)) dx

let u = x
du = dx

dv = sin 2x
v = -cos x / 2


so you plug in the formula and get:

(-x cos(2x) ) / 2 - int (-cos x /2) dx

= (-x cos(2x) ) / 2 + sin (2x) /4

hoepfully that makes sense....

oh yeah, and hyperbolic functions are interesting.

Have the most interesting and fuckhard question from my mechanics course. Staying up until I do it.

I'll post it in a couple hours

remember, final minus initial.

Impulse?

or any variable with a delta sign in front of it!

Oh yeah I guess.

Anyway...

A sphere of mass m1 moving with speed u1 collides directly with a similar sphere of mass m2 moving with speed u2 in the same direction (u1 > u2).The coeffient of restitution between the two spheres is e. Show that the loss of kinetic energy, E, due to the collision satifies the equation.

2(m1 + m2)E = m1m2(u1 - u2)^2(1-e^2)

dayum, never heard of coefficient of restitution before....

I bet you had to use the equation Ek = 1/2 m v^2.