Recent content by evo_vil

Yes that help alot... Thank you... I was being stupid at the end and not thinking about the units... Newton meters divided by meters provides Newtons... Duh... After redoing the number i get your value... Thanks (sorry bout the formating, done on my phone)

Indeed... 'tis said flower

ah ha... lecturer posted the correct formulas: x(t) := 16243.t^{14} + 52014.3t^{13} - 79851.5t^{12} - 185877.t^{11} + 150142.t^{10} + 256559.t^9 - 135331.t^8 - 170995.t^7 + 59441.5t^6 + 55884.2t^5 - 11114.5t^4 - 8071.01t^3 + 437.63t^2 + 481.059t + 341 y(t) := -31948.4t^{14} -...

I do believe they are attempting to interpolate something (thats the end case of the project, to create a Lagrange interpolating polynomial for our signature) but I've copied them straight out of the pdf that has the questions in it so what you see is what I've got in front of me... ill just...

I guess i am going to have to go with something along those very lines... Just thought i might be doing something wrong and should actually be getting a flower or something... but i guess not

Sorry for the hijack but i have a similar question: for a recent semester test we needed to show: \frac{\partial{P}}{\partial{V}} \frac{\partial{V}}{\partial{T}} \frac{\partial{T}}{\partial{P}} = -1 i simply converted each partial into its implicit version and canceled terms...

Homework Statement I need to calculate the spring constant of a torsion spring. Turns : 20 Mean Diameter : 6mm Wire Diameter : 2mm Material : ASTM A228 Arm Length : will be negligible, as they will be fixed Orientation : Arms inlineHomework Equations k=\frac{Ed^4}{10.8DN} The Attempt at a...

Homework Statement Plot the following parametric curve, de fined by the following two polynomials, on the interval: t \in (-1;1). What shape do you get? x(t) = 16243t^{14} + 520143t^{13} -798515t^{12} -185877t^{11} + 150142t^{10} + 256559t^9 -135331t^8 -170995t^7 + 594415t^6 + 558842t^5...

Thanks! Ive browsed PF for quite a few years, but never participated, so thanks for the welcome... I think I am just going to go with what I've calculated and see how it goes... Maybe see if other people get the same thing. Thanks for your help

Homework Statement If z = f(x,y) such that x = r + t and y = e^{rt}, then determine \nabla f(r,t) Homework Equations \nabla f(x,y) = <f_x,f_y> The Attempt at a Solution Now if i follow this the way i think it should be done then i find the partials of f wrt x and y and then...