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- Elementary functions. Calculating limits, derivatives and integrals. Optimization problems
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Jan16-12 Greg Bernhardt
Please post any and all homework or other textbook-style problems in one of the Homework & Coursework Questions...
Feb23-13 09:24 AM
1 46,282
For 1 < p < oo it is true that: If we have a sequence ( x_n )_(n >= 1) in l^p that converges weakly to zero then that...
Oct25-08 09:35 PM
1 1,070
The JGM3 model of earth's gravity is expressed in the form of coefficients C and S to Legendre polynomials in r, theta...
Oct28-08 12:16 PM
1 1,241
Show that lim sup (an+bn)<=limsupan +limsupbn where (bn) and (an) are bounded... How would you go from for n < N...
Oct28-08 11:07 PM
1 1,658
to be integratable but still give a wrong answer even if all the steps are performed correctly? Assume that an...
Oct28-08 12:07 PM
1 974
In vector calculus, with a space curve C, there are the 3 vectors, tangent, normal, and binormal. Are they always...
Nov3-08 03:27 PM
1 3,102
I'm looking over a proof and I'm wondering from which principles does it follow that \mid a - b \mid < 1 \to \mid a...
Nov5-08 01:56 PM
1 1,532
I am stuck on both these questions, I have no idea where to begin I was given a worksheet which our instructor will...
Nov6-08 12:54 PM
1 1,716
I converted the function, {t^n}{e^{-t}} where t is the variable (time domain) and n is any real whole integer greater...
Nov9-08 09:00 PM
1 3,021
find the points of discontinuouty limit as x,y ---> (0,0) of function f(x,y) = 1-((cos(x^2+y^2)/(x^2+y^2))
Nov12-08 03:42 AM
Pere Callahan
1 2,402
I was just curious as to why out of all properties of metric spaces (ie compactness, closure, etc), i dont know how...
Nov15-08 01:57 PM
1 995
thanks I think I got it :)
Nov16-08 05:01 AM
1 1,250
Hi Could you please tell me how to integrate it? Thanks ~~ \int_{-\infty}^{\infty} \frac {e^{i\omega t}}...
Nov18-08 01:46 PM
1 2,181
I am having trouble remembering the correct approach here. This is in regards to deriving a governing equation for...
Nov19-08 06:08 AM
1 1,548
I know its a really dumb question and if i reached this far in math i should know do you draw the diagrams...
Nov20-08 05:51 AM
1 1,343
Show that if E is a Borel measurable subset of R, then {(x,y)| x-y is in E} is also measurable in the product space of...
Nov21-08 09:24 AM
Pere Callahan
1 1,480
this is the question, Prove that if f is continuous on (a,b] and if |f| is bounded on then f is integrable on . ...
Nov23-08 05:23 PM
1 3,077
Howdy Ho, partner. I have a series of functions {f_{n}} with f_{n}(x) := x^{n} / (1 + x^{n}) and I am investigating...
Nov23-08 08:46 PM
1 1,556
Does anybody know substitutions that can be used for the following integrals: \int (a^2 - b^2 \cos\theta)^{-3/2}...
Nov24-08 06:21 PM
1 1,092
I've been reading Gunning and Rossi's book on complex analysis in several variables (good book!). They define...
Nov27-08 06:12 AM
1 1,009
Hi. I am having trouble getting started on this problem. I need to find the Laurent series for: f(z) = exp in...
Dec2-08 08:32 PM
1 1,437
hi there! Im doing vector analysis the last two weeks and I feel unsure about this identity. Can anyone of you say...
Dec1-08 01:28 PM
1 972
Is it always true that if; f(x) = f '(x), then; -f (x) = - \int f '(x) ? That is, the negative of a derivative...
Dec1-08 08:35 PM
1 1,052
I got a relation as follow \lambda_k = \frac{2 n(\lambda_k) L}{k} where \lambda_k is a wavelength at mode k, k...
Dec2-08 01:16 PM
1 1,035
Sorry me again THE CRC tables define the above integral as using sqrt(x^2-a^2) let t(x) = sqrt(x^2 - a^2) ...
Dec5-08 10:45 AM
1 2,107
kindly make h or d the subject of the formula y={1/2pi(d-h)}ln(d/h) thank u Moderation Note: e-mail address...
Dec5-08 10:08 AM
1 1,021
Ok, so a teacher showed an example in class awhile back. So im going over my notes right now, and I don't understand a...
Dec7-08 05:07 AM
1 1,368
I'm looking at Gullstrand-plainleve coordinates in Kerr metric. While on the whole, it seems pretty straight forward,...
Dec10-08 03:56 AM
1 1,581
P=P0ekt I'm given that a population doubles in number in 4 hours. Does that mean the k in the function equals 0.5...
Dec9-08 07:43 AM
1 1,210
I am having trouble understanding how to find the limit of a summation. I know the formulas and properties but cannot...
Dec10-08 12:23 AM
1 5,918
Hi, I have an integral that I find quite difficult, I can't obtain anything from mathematica (but I'm far from...
Dec10-08 02:28 PM
1 553
Hi all, i found this problem in a topology book, but it seems to be of an analysis flavour. I'm stumped. Show that...
Dec15-08 01:56 PM
Citan Uzuki
1 783
If I were given a problem to find this limit: ...
Dec15-08 12:01 PM
Citan Uzuki
1 1,495
Hey everyone, I have a system that I know the x,y,z position and the alpha,beta,gamma euler rotation of an object...
Dec15-08 05:37 PM
1 2,683
I've looked everywhere for a method or approach to break down this integral, but so far, nothing. If anyone has any...
Dec20-08 02:01 AM
1 1,306
\Gamma(z) = \int\limits_0^{\infty} t^{z-1} e^{-t} dt I can see that if \textrm{Re}(z)>0, then the integral...
Dec22-08 07:35 AM
1 1,531
Hello! Let's see if you can give me some advice on this: I want to describe a function with a sum of real...
Dec22-08 04:04 PM
Dr. Lady
1 7,890
Hi, I am working on the derivation of an equation on electrokinetic flow in microfluidic. I am stuck at a point...
Dec23-08 12:51 AM
1 3,053
Assuming that I understood correctly one claim from the Riemann's On the Number of Prime Numbers less than a Given...
Dec29-08 01:25 PM
1 1,468
I'm facing the following problem which sounded simple but apparently it is not (at least for me): I have two...
Dec27-08 11:14 PM
1 1,644
Hello! Is there any way of calculating the integral of H_n(x) * H_m(x) * exp(-c^2 x^2) with x going from -infinity...
Jan5-09 06:51 PM
1 3,080

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