| Page 1 of 1 |
|
|
 Posted: Sun, 1st Apr 2012 05:51 Post subject: PChem II is too fucking hard!! >_< |
|
 |
The class has 1 midterm and 1 final. The midterm had only 3 questions......WTF?! The wave functions and integration problems are the fucking longest pieces of shit equations ive ever seen. Havent seen shitty math like this in calc II or III. This is how the pchem questions went....
1)  2) 3)
I looked at peoples faces when exam time was up, everybody looked sick 
ASUS Maximus XII Formula | Core i9 10900k @ 5.2Ghz | 32GB G.Skill DDR4 4200Mhz | EVGA RTX 3080 Ti FTW3 Ultra Hydro Copper | ASUS ROG PG35VQ
|
|
| Back to top |
|
|
Przepraszam
VIP Member
Posts: 14503
Location: Poland. New York.
|
| Posted: Sun, 1st Apr 2012 05:59 Post subject: |
|
|
lmao integrals  are so eeasy..they are just oposite of doing derivitaves ..just have evaluate at different points and subract
White people problems 
try doing double fourier transform or cauchy reside theorem 
|
|
| Back to top |
|
|
|
|
| Posted: Sun, 1st Apr 2012 07:02 Post subject: |
|
|
| besthijacker wrote: | | lmao integrals are so eeasy..they are just oposite of doing derivitaves ..just have evaluate at different points and subract |
Oh yes integrals are soo easy just take the oposite of doing derivatives  However when im faced with shit like this while the clock is ticking
Not to mention this is chem and not a math class so I have to also apply the right formula for a given situation. And the exam is based on the first 11 chapters from a quantum chemistry textbook so theres a shit load of wave functions that I have to know. Its not as simple as just "oposite of doing derivitaves"
ASUS Maximus XII Formula | Core i9 10900k @ 5.2Ghz | 32GB G.Skill DDR4 4200Mhz | EVGA RTX 3080 Ti FTW3 Ultra Hydro Copper | ASUS ROG PG35VQ |
|
| Back to top |
|
|
aevis
Posts: 522
Location: Absurdia
|
|
| Back to top |
|
|
locke89
Posts: 2812
Location: Poland
|
|
| Back to top |
|
|
|
|
| Posted: Sun, 1st Apr 2012 12:58 Post subject: |
|
|
mwahaha med students in estonia havent had math in their programme for many years now :3
i5-3570k @4.4gHz, MSI GTX 970 GAMING 4g OC'd, MSI z77a-g45, Corsair Vengeance 8gb 1600mHz, Corsair TX650 PSU, Crucial M4 128gb, WD 1.5 TB HDD, Seagate 1TB HDD, LG 27MB85R-B 1440p
RSI name: ctulu
|
|
| Back to top |
|
|
ixigia
[Moderator] Consigliere
Posts: 65088
Location: Italy
|
| Posted: Sun, 1st Apr 2012 16:51 Post subject: |
|
|
Been there done that (sort of )..thankfully we've had only one exam on this stuff 
|
|
| Back to top |
|
|
|
|
| Posted: Wed, 4th Apr 2012 11:17 Post subject: |
|
|
After reading through this topic I am sure that tonite I will have my regular university/exam-nightmare. I have been studying aeronautics for 2 years and after some shit in life had to drop it and turn to economics (it was more easier to work and study in the same time). Still have dreams about exams although I finished my uni long time ago.
ZX Spectrum 16K/48K | Grundig C410 cassette recorder (adjustable head) | 20BT TV Philips Multistandard Color V37cm | ZX Interface 2 | New Kempston Compatible Competition Pro Switched Joystick | Sinclair BASIC OS
|
|
| Back to top |
|
|
|
|
| Posted: Wed, 4th Apr 2012 15:04 Post subject: |
|
|
|
|
|
| Back to top |
|
|
ixigia
[Moderator] Consigliere
Posts: 65088
Location: Italy
|
| Posted: Wed, 4th Apr 2012 16:47 Post subject: |
|
|
| Chibuky wrote: | | After reading through this topic I am sure that tonite I will have my regular university/exam-nightmare. I have been studying aeronautics for 2 years and after some shit in life had to drop it and turn to economics (it was more easier to work and study in the same time). Still have dreams about exams although I finished my uni long time ago. |
I did a similar thing, switched from Engineering Informatics (not sure it's the correct translation) to Management Engineering, one of the best things I've ever done since I pretty soon realized that coding 24/7 definitely wasn't for me |
|
| Back to top |
|
|
|
|
|
| Back to top |
|
|
nouseforaname
Über-VIP Member
Posts: 21306
Location: Toronto, Canada
|
| Posted: Thu, 5th Apr 2012 00:13 Post subject: |
|
|
|
|
|
| Back to top |
|
|
Neon
VIP Member
Posts: 18935
Location: Poland
|
|
| Back to top |
|
|
nouseforaname
Über-VIP Member
Posts: 21306
Location: Toronto, Canada
|
|
| Back to top |
|
|
Neon
VIP Member
Posts: 18935
Location: Poland
|
|
| Back to top |
|
|
nouseforaname
Über-VIP Member
Posts: 21306
Location: Toronto, Canada
|
|
| Back to top |
|
|
garus
VIP Member
Posts: 34200
|
| Posted: Thu, 5th Apr 2012 09:32 Post subject: |
|
|
snip
Last edited by garus on Tue, 27th Aug 2024 21:25; edited 1 time in total
|
|
| Back to top |
|
|
|
|
| Posted: Wed, 23rd May 2012 08:35 Post subject: |
|
|
| Atropa wrote: | It does look like something nobody would ever care to calculate without a computer :/
|
Funny you should mention that. The last few chapters of the book actually goes into detail about how to calculate these wave functions using a computer Because apparently the total energy of a system becomes unsolvable once a system has more than 1 electron and the energy has to be approximated using hartree-fock calculations which are done on a computer. HTF calculations involving normal molecules become too complex. They can also be done by hand but it takes about a month to solve them, which they used to do back in the day lol. This was actually the more interesting part of the course. The more basis sets used in the HTF calculation, the closer and closer you get to the true energy value. But increasing number of basis sets also increases computational cost and time.
I remember in lab we ran a DTF calculation (which is less accurate than hartree fock but is much faster) for a simple ethyl acetate molecule. It took about an hour for the computer to finish calculating the energy. But I thought the program (Gaussian) was pretty cool so I came home and pirated it! 
Oh and I was wrong, apparently there was a second exam. So it was 2 exams and a final. For the second exam, the class average was a 32 and the highest grade in the class was a 60 and that bitch is hella smart, shes trying to get into med school. The old guy doesn't give us partial credit though which I think is bullshit in a class like this. Also, if you write an answer which is usually long and about 90% of what you write is correct but you write 1 sentence that has nothing to do with the question, he marks the whole thing wrong. I feel like he goes into rage mode when he grades our exams.
That second exam was totally fucked up. There was a symmetry point group section and I remembered one of the questions asked for the point group of ethylene. And I remember from somewhere the point group of ethylene is D2h. So I wrote Ethylene = D2h. Keep in mind he didn't want an explanation in this part, he only wanted the point group. But like a fucking moron, I went ahead and wrote down some symmetry elements cuz it just seemed weird to only write D2h. One of the things I wrote was "linear" (I have no idea why I wrote this but I was in a hurry). Anyways, because I wrote the molecule was linear, 0 credit. And that question was worth 10 points out of 100!
So of course I raged hard and went to him to ask him what happened with this question. He claims that I guessed the answer was D2h since I wrote "linear". HOW THE FUCK DO YOU GUESS A POINT GROUP??! He really thinks I just sat there and thought hmmmm ethylene...lets go with "D2h" DAFUQ YO!
Anyways, I just had my final exam today. I studied my ass off for it and it wasn't that bad 
After tommorow I am done with finals. Gonna come home watch some porn and overclock the shit out of my PC to the point where my CPU is on the verge of burning! 
ASUS Maximus XII Formula | Core i9 10900k @ 5.2Ghz | 32GB G.Skill DDR4 4200Mhz | EVGA RTX 3080 Ti FTW3 Ultra Hydro Copper | ASUS ROG PG35VQ |
|
| Back to top |
|
|
Bigperm
Posts: 1908
Location: Alberta,Canada
|
| Posted: Wed, 23rd May 2012 17:02 Post subject: |
|
|
| timechange01 wrote: | | besthijacker wrote: | | lmao integrals are so eeasy..they are just oposite of doing derivitaves ..just have evaluate at different points and subract |
Oh yes integrals are soo easy just take the oposite of doing derivatives However when im faced with shit like this while the clock is ticking
Not to mention this is chem and not a math class so I have to also apply the right formula for a given situation. And the exam is based on the first 11 chapters from a quantum chemistry textbook so theres a shit load of wave functions that I have to know. Its not as simple as just "oposite of doing derivitaves" |
Been there. Done that. Honestly that question is not that hard. Not that i ever want to do that shit again though. lol
| Jenni wrote: | | I drunk. I don't fucking care! |
|
|
| Back to top |
|
|
spankie
VIP Member
Posts: 2958
Location: Belgium
|
| Posted: Wed, 23rd May 2012 17:58 Post subject: |
|
|
Yeah, it aint that hard, can rewrite it as:
a + b*d2/dx2(a+b) dx / (a + b)^2dx
i did the first integral part and i end up with a/2
But you are right of course that this is a retarded question. It serves no purpose at all, you will make mistakes if you do it by hand. I remember doing triple integrations in fluidic physics when I was in university. I did biotech and I had physics, ok. But fluidics, maybe ok. But proving some theorem using triple integration and a lot of sines and cosines is retarded.
|
|
| Back to top |
|
|
|
|
| Posted: Fri, 1st Jun 2012 20:34 Post subject: |
|
|
OMG forget all the bitching I PASSED!!!!!!!!!!!!! He posted my grade at like 3am, I almost had a heart attack while logging in to check it
Max Payne 3 comes out and now this. BEST FRIDAY EVER 
ASUS Maximus XII Formula | Core i9 10900k @ 5.2Ghz | 32GB G.Skill DDR4 4200Mhz | EVGA RTX 3080 Ti FTW3 Ultra Hydro Copper | ASUS ROG PG35VQ
|
|
| Back to top |
|
|
|
|
| Posted: Sun, 3rd Jun 2012 17:20 Post subject: |
|
|
That integral is not hard at all. It just needs a lot of time to be done. And it would suck if you made mistake.
|
|
| Back to top |
|
|
|
|
| Posted: Sun, 3rd Jun 2012 21:58 Post subject: |
|
|
| peter980 wrote: | | That integral is not hard at all. It just needs a lot of time to be done. And it would suck if you made mistake. |
The point is, I passed so none of that matters anymore 
ASUS Maximus XII Formula | Core i9 10900k @ 5.2Ghz | 32GB G.Skill DDR4 4200Mhz | EVGA RTX 3080 Ti FTW3 Ultra Hydro Copper | ASUS ROG PG35VQ |
|
| Back to top |
|
|
| Page 1 of 1 |
All times are GMT + 1 Hour |
