akya

many use it though... (not me ) Welcome Yiuel (though I did say so earlier) For the others... Yiuel is one of my friends...at school

Happy birthday to you

Happy birthday

I told you I posted the solution Found it finally Maple is a program used to simplify the calculations and display 3d graphs...it can serve for all sorts of mathematical problems..

HAPPY BIRTHDAY TO YOU !

HAPPY BIRTHDAY !!

2900 posts and counting

no online info unfortunatly...and the labs I do in class are in french... care to try ? A friend gave me clues and I was finally able to do the problem...want to know how ? >restart: with(plots): with(linalg): >f:=(x,y)->(-3*x^2-y^2); >bla:=plot3d(f(x,y),x=-2..2,y=-2..2,view=[-2..2,-2..2,0..1],axes=framed,style=wireframe): >display(bla); >gradient:=((diff(f(x,y),x),diff(f(x,y),y))); >subs(x=1,y=3/2,vector[gradient]]); >trajectory:=diff(y(x),x)=gradient[2]/gradient[1]; >dsolve(diff(y(x),x)=y(x)/(3*x),y(x)); >dsolve({diff(y(x),x)=y(x)/(3*x),y(1)=3/2},y(x)); >x[a]:=t; >y[a]:=3*t^(1/3)/2; >plot([x[a],y[a],t=0..1]); >ble:spacecurve([x[a],y[a],f(x[a],y[a])],t=0..1,color=pink,thickness=3): >bli:spacecurve([x[a],y[a],0],t=0..1,color=orange,thickness=3): >blo:spacecurve(sqrt(ln(1/0.4)/3)*cos(t),sqrt(ln(1/0.4))*sin(t),0.4],t=0..2*Pi,color=blue,thickness=3): >display(bla,ble,bli,blo); I you need any explanations, tell me

I would watch surgery and eventually help if it could save lives (whether animal or human) but I wouldn't be able to watch things like transplantation (the moment you get the still beating organ from the host "who's dead") or amputation...

Well, it's worth 10% of my year in Maths... So here's the things... The surface of a hill is given with the following equation f(x,y)= exp(-3*x^2-y^2); . A "THING" is located at the initial point P(1, 3/2) and wants to make the ascension while maintaining at each point of its trajectory, the direction of the maximum variation rate. The thing is I have to find and represent it on the same figure : a ) the surface; b ) the ascension trajectory (gradients, differential equation of the trajectory and the particular solution, parametric equations) c ) the projection of the traject on the domain (parametric equations) d ) the trajectory at the same altitude h = 0,4 (parametric equations), Instructions: The window in which it is displayed must be -2 <= x <= 2 ; -2 <= y <= 2 et 0 <= z <= 1, axes are of the type framed and the style of the surface, wireframe The curves must be of different colors and large=3. Can anyone help me ?

ditto

Please tell me I didn't dream ! thread = http://forums.wildfiregames.com/wfg/index....indpost&p=57873

hehe nice post shadow_wolf66 great ! Welcome to WFG btw Oh, and I'm the one who got him here and I'm also a community admin at Nothingness

oki

The thing we see here...a lot more than soccer is football...

really ? Uppy told us it was two days ago...or so...

Flames because 1rst it's a canadian team, second, because Tampa Bay eliminated the Habs <_

Congrats Tim to a job well done

2800 and counting

roflol ^^ great jokes

welcome back

uh, now there are two threads...do you want me to ask Black Op to delete one of 'em ? and the posts that aren't necessary

well, his birthday is not at the bottom of the main page...so we didn't know...

bah...it'll pass quickly

huh ? it's his birthday ? didn't notice... Happy birthday !