Recent content by badtwistoffate

Thus, instead of just a -t in the exponent, there is now a constant with it! So is this legal?

I know that the gamma function (from 0 to infinity): \int e-t tx-1 dt = \Gamma(x) and that the relation exists... \int e-ut tx-1 dt = 1/ux \Gamma(x) Now for the lower bound incomplete gamma function... I see that from http://people.math.sfu.ca/~cbm/aands/page_260.htm (equation...

V = \int_0^{2\pi}\int_0^\alpha\int_0^a \rho^2\sin{(\phi)}d\rho\ d\phi\ d\theta = \frac{2\pi a^3}{3}(1 - cos{(\alpha)}) Reason why I ask was I am just evaluating your limits... I see for outermost integral, limits are from 0 to 2 \pi\ . makes since, because were rotating around 360 degrees...

Just to clarify: \phi\ , \theta\ , \rho\ are respectively: elevation angle, azimuth angle, and radius...

Did you derive this triple integral?

Thanks for the help guys. Actually, my math background goes to ODE - so it makes since, I just assumed a simpler method existed. I am going to look in my multivariable calculus text to revitalize my head for this approach...

Sorry. What I am trying to find is the volume of a segment of a sphere. I can find the area in 2-D space but cannot figure out a formula for volume for 3-D space.

Homework Statement Trying to either derive or find a formula for the volume given by the space carved out from the area between an arc and the center of a circle. Essentially, the area between an arc and the center of a circle rotated 360 degrees, almost a cone shape with the upper boundary...

Apply to a grad school (not physics, but atmospheric science or GIS) and my GPA as of now is 3.22. Took the General GRE and got a 620 math, 460 verbal :-/... Talk to my prof he thinks I should be able to. My GPA should Inc. due to less gen ed classes I have to take. But I don't know if I should...

Im graduating this spring and I am going to apply to some graduate schools and have to take the GRE's. So.. When is a good time to take them and how much in advance should you prepare for them, like a good rule of thumb? I was planning early september... Too soon/late? Also, anyone know a site...

take pre-calc instead of calc. IT seems to be the obvious choice, if your not prepared for calc, then you make sense to drop down a level. IF not prepared for that go down to college algebra.

i laughed out loud when i clicked that

http://en.wikipedia.org/wiki/U-substitution

Got the eqn dy/dx=x(1-y) and it can be solved both linear and separable methods.(Linear method being using a integrating factor) Problem I am having is that with this two methods i get two different (yet similar answers) and was wondering if you can see my problem with this two methods I am...

fluid with 5mg/cm^3 of drug enters bloodsteam at 100cm^3/hr, drug is absorbed by body tissue or otherwise leaves the bloodstream at a rate proportional to the amount present with a rate constant of .4(hr)^-1. so assuming the drug is always uniformly distrbuted throughout the bloodstream, the...