First Post!
- Thread starter potpimp
- Start date
welshsmoker
Well-Known Member
E=MC2 i think.
Matt Rize
Hashmaster
im going to love this forum, give me a few days to get some threads together.
Topics (please add your suggestions)
Lab testing:
The Cannabinoids
The Terpenoids and Flavonoids
GCMS vs HPLC vs other
Full Spectrum Lab: why did they walk away from the industry?
Steep Hill Lab: the nations first testing facility.
Cannabinoid modulation:
Agonist vs Antagonist effects of terpenoids... why OG Kush tests low for THC but we all love it ... limonene acts as an agonist.
Other terpenoid modulation: myrcene
Neutralizing chlorine and chloramines with molasses by Tim Wilson
Calculating ppm from NPK and food labels.
Topics (please add your suggestions)
Lab testing:
The Cannabinoids
The Terpenoids and Flavonoids
GCMS vs HPLC vs other
Full Spectrum Lab: why did they walk away from the industry?
Steep Hill Lab: the nations first testing facility.
Cannabinoid modulation:
Agonist vs Antagonist effects of terpenoids... why OG Kush tests low for THC but we all love it ... limonene acts as an agonist.
Other terpenoid modulation: myrcene
Neutralizing chlorine and chloramines with molasses by Tim Wilson
Calculating ppm from NPK and food labels.
potpimp
Sector 5 Moderator
In my previous life my college major was medical lab technology. I was also a lab technicial for a peanut processing plant doing qualitative analysis on freshly dug peanuts. I pulled a 4.0 in chemistry and wondered why I didn't go on with that. ...and I toyed with being an amateur pharmacologist, of sorts. Lysergic acid Dyethylemide anyone?
olylifter420
Well-Known Member
Whats that, calculus?
potpimp
Sector 5 Moderator
Yep. (adding in more letters)
Could you expand on the first post? I.e. specifically what topic of integration did you obtain this question from and also while I don't think I'd be able to help please let us know whether your solution was correct. Haven't studied it in some time though also don't recall ever studying compound integers (or multivariable integration, whatever it may be called).
crazymanny00
Active Member
looks correct to me
smokealotmore
Active Member
Try going t hmework. Help man some peole lol ask techer tell her youll smoke her out lol might get an A if lucky
potpimp
Sector 5 Moderator
Welcome to RIU Chris!! It was just a little joke; I haven't had "homework" in many years. Thanks for the offer to help.
massah
Well-Known Member
well specifically that would be an integration
So you don't recall the origin of this question? From where did you obtain the image?
researchkitty
Well-Known Member
First thread on 11-11-11.................... We shall have a celebration each year to celebrate! 
massah
Well-Known Member
MEH...always need moargood thing we got all these new forums. i don't know where i'd be without another thread like this.
Also two things:
Firstly this may be a foolish question as said due to long absence from such maths i may simply be forgetting basic things however how can one integrate with respect to theta when it isn't a variable in the actual function?
Secondly why at the second step don't we just pull r out the front as well? Also after that I'm a bit skeptical as to the working for a number of reasons though I'd like a bit more input before making any further accusations.
However one more Q: Wouldn't we need to know the relative sizes of a and r in order to know how to integrate the inverse of sqrt(a sq'd minus r sq'd)? And I don't mean due to the fact we can end up with complex solutions of course we're probably talking real solutions though if I remember correctly depending on the relative sizes couldn't we get either a natural log or arc tan etc?
Further information would be appreciated.
And thank you for the welcome.
Firstly this may be a foolish question as said due to long absence from such maths i may simply be forgetting basic things however how can one integrate with respect to theta when it isn't a variable in the actual function?
Secondly why at the second step don't we just pull r out the front as well? Also after that I'm a bit skeptical as to the working for a number of reasons though I'd like a bit more input before making any further accusations.
However one more Q: Wouldn't we need to know the relative sizes of a and r in order to know how to integrate the inverse of sqrt(a sq'd minus r sq'd)? And I don't mean due to the fact we can end up with complex solutions of course we're probably talking real solutions though if I remember correctly depending on the relative sizes couldn't we get either a natural log or arc tan etc?
Further information would be appreciated.
And thank you for the welcome.
This is what I meant (sorry for forma/spelling etc. typing on phone):
Please omit prior comment about relative sizes I forgot it was with respect to r and the a and r in te denominator would be switched to get natural log anyway however:
shouldn't the definite integral in step 3 be :
r(arcSin r/a) for a>0, -a<0<r. ?
I'm pretty sure there's a screw up between lines 2 and 3...
This Q doesn't seem as hard as it initially looked I just hadnt seen these types in a while very interesting though I'll give it a go tomorrow anyone else with any input please post.
Cheers.
Please omit prior comment about relative sizes I forgot it was with respect to r and the a and r in te denominator would be switched to get natural log anyway however:
shouldn't the definite integral in step 3 be :
r(arcSin r/a) for a>0, -a<0<r. ?
I'm pretty sure there's a screw up between lines 2 and 3...
This Q doesn't seem as hard as it initially looked I just hadnt seen these types in a while very interesting though I'll give it a go tomorrow anyone else with any input please post.
Cheers.