Recent content by adm_strat

Look up Plot3D in the help, it gives examples on how to use the function. Sometimes you need to import graphics packages before you can use certain functions in there. I don't think Plot3D needs and packages but implicit functions might. I has been a while since I have used Mma.

[SOLVED] Surface Area Homework Statement Find the area of the surface of the part of the plane x + 2y + z = 4 that lies inside of the cylinder x^{2} + y^{2}=4 Homework Equations A(S)= \int\int_{D} \sqrt{1+( \frac{\partial z}{\partial x})^{2} + +( \frac{\partial z}{\partial y})^{2}}...

n/m, found them out.

I tried to simply minimize the equation like you did kompik since I cannot get mathematica to spit out the results (I don't know why, but it doesn't matter). I couldn't get mathematica to solve the equation so I simply put it into my calculator and used the zero function to get my answer. I...

[SOLVED] Absolute Value in a double integral Homework Statement If \Omega = [-1,1] x [0,2], evaluate the double integral \int\int_{\Omega} \sqrt{|y-x^{2}|} dA given that it exists. Homework Equations None The Attempt at a Solution I know that in order to integrate with the...

Thanks for the response I typed it in as you instructed (as close as possible to yours) I received the response that is shown in my attachment. Why does it not give me numeric results? I could have received 20 different representations for that if I wanted to simply by rearranging...

[SOLVED] Legrange-->System of equations Homework Statement Suppose (a,b) is on the graph of f(x)=x^{2} and (c,d) is on the graph of g(x)=ln(x) a) Accurately approximate the minimum distance between (a,b) and (c,d) b) Accurately approximate (a,b) and (c,d) c) What is the relationship...

Duh, no I didn't integrate. Lol, I feel kinda dumb after that one. Thanks

[SOLVED] Leibniz' Integral rule Homework Statement Use the Leibniz' integral rule for differentiating under the integral sign to determine constants a and b such that the integral \int^{1}_{0}(ax+b-x^{2})^{2} dx is as small as possible. Homework Equations Leibniz' Interation was...

I think that means that as n\to\infty, then \frac{\vec a \cdot \vec b }{|\vec a| |\vec b|}\to\frac{\sqrt{3}}{2} That means that \arccos\frac{\sqrt{3}}{2} \to \frac{\pi}{6}, which is the angle between the two vectors Thanks for the help

I was just trying to remember from previous classes that I took. Simply a guess.

I agree with the \vec a \cdot \vec b = \frac{n*(n+1)}{2} I don't agree with the part where you say that |\vec a| |\vec b| = n^{2} My reasoning is |\vec a| = \sqrt{1 + 1 +...+ 1} and as n\to\infty, the limit goes to \sqrt{n} -- Also shouldn't the sum of the series: \sqrt{1 + 4 + 9 +...

[SOLVED] Vector Problem Given Suppose a and b are vectors in Vn and theta is the angle between them. If a=<1,1,...,1> and b=<1,2,...,n>, find the limiting value of theta as n-->infinity Relevent equations: a*b = |a|*|b| * cos(theta) or theta = arccos ((a*b)/(|a|*|b|) I know...