153 reputation
5
bio website fabulastudios.co.uk
location London, United Kingdom
age 21
visits member for 2 years, 4 months
seen Dec 20 '12 at 1:42

I'm a full time student currently studying for a masters in theoretical physics at imperial college london. In my spare time I enjoy playing around with html, css, javascript, jQuery and C++. I also work and have designed the website for a small app development company fabulastudios. Check us out here


Apr
23
awarded  Commentator
Apr
23
comment Solving a problem to do with the partial derivative chain rule.
Ahhhhhhh I'm being stupid don't worry... It's neither is it? $f'(x-y) = \frac{\partial f(x-y)}{\partial s} $ ?
Apr
23
comment Solving a problem to do with the partial derivative chain rule.
Because those are different things so when I do $ \frac{\partial^2u}{\partial x \partial y} u$ how do I notate that?
Apr
23
comment Solving a problem to do with the partial derivative chain rule.
The only problem I have still is with your $ ' $ notation? What does that mean? is $f'(x-y) = \frac{ \partial f(x-y)}{\partial y} $ or $ \frac{ \partial f(x-y)}{\partial x} $?
Apr
23
comment Solving a problem to do with the partial derivative chain rule.
Ahhhhh right I've got you! Didn't quite click in my mind what you meant until you showed $ \frac{\partial}{\partial y} $ Thanks, I'll have another go at it, then mark you correct :D
Apr
23
comment Solving a problem to do with the partial derivative chain rule.
How do you find $\frac{\partial}{\partial y} u $ Using that method? or $ \frac{\partial^2}{\partial x \partial y} u $ ?
Apr
23
asked Solving a problem to do with the partial derivative chain rule.
Apr
16
accepted Proving formulae for Consecutive population decays.
Apr
13
answered Proving formulae for Consecutive population decays.
Apr
13
comment Proving formulae for Consecutive population decays.
Ok I've followed your method, however even the way your saying to do it doesn't account for the $\alpha A_0 \frac{e^{−\alpha t}−e^{−\beta t}}{\beta − \alpha}$ because you don't get the $ e^{-\beta t} $ in the numerator... :/
Apr
12
comment Proving formulae for Consecutive population decays.
Oooop, just realised I'm being stupid... One second!
Apr
12
comment Proving formulae for Consecutive population decays.
This is confusing me soooo much! I've only ever done particular solutions and general solutions for second order DE's, for first order I've only ever done using integrating factors, but that doesn't work in this case because you don't know what B is, so you can't use it as an integrating factor! :/ Graghhh I'm soooo frustrated with this question :/
Apr
12
comment Proving formulae for Consecutive population decays.
Will I need to use an integrating factor to get the particular solution?
Apr
12
asked Proving formulae for Consecutive population decays.
Apr
12
accepted Evaluation of $ \lim_{ x \to \infty} x^{\frac{3}{2}}(\sqrt{x+2}-2\sqrt{x+1}+\sqrt{x})$
Mar
30
comment Evaluation of $ \lim_{ x \to \infty} x^{\frac{3}{2}}(\sqrt{x+2}-2\sqrt{x+1}+\sqrt{x})$
Ahhh dammit why can't I spot these things for myself! :P
Mar
30
awarded  Supporter
Mar
30
awarded  Scholar
Mar
29
awarded  Student
Mar
29
asked Evaluation of $ \lim_{ x \to \infty} x^{\frac{3}{2}}(\sqrt{x+2}-2\sqrt{x+1}+\sqrt{x})$