Recent content by abr_pr90

¿Software to simulate graphs? Is there an alternative to MATLAB for simulating equations, I am looking for a way of getting some intuition for some Convection Diffusion Equation. I would like to play around with it, simulate it, change its IC/BCs, having some interactive graphs and stuff.

Homework Statement Find a particular solution to the differential equation -6y''+5y'-1y = -1t^2+1t+1e^2t Homework Equations y = y(c) + y(p) The Attempt at a Solution First solve the homogeneous equation -6y" + 5y' - y = 0. The characteristic equation is -6r^2 + 5r - 1 = 0...

why I hate, despise, detest, and loathe LabView http://jshoer.wordpress.com/2007/08/03/why-i-hate-despise-detest-and-loathe-labview/

Solutions of Laplace's equation are called harmonic functions; they are all analytic within the domain where the equation is satisfied. If any two functions are solutions to Laplace's equation (or any linear homogeneous differential equation), their sum (or any linear combination) is also a...

Try this: syms x,y,z,w; y = [sin(x)+5 3*cos(y)-4 cos(z)-1 cos(w)-0.6]; C=zeros(2,2); for a=1:2 for b=1:2 B(a,b)= solve('y(a,b)=0',x); B(a,b)= solve('y(a,b)=0',y); B(a,b)= solve('y(a,b)=0',z); B(a,b)= solve('y(a,b)=0',w); end end

To know that, try plotting k=tan(k) and f(x)=x sin(x/pi) in the same graph. the sin function gives you the maximum value when sin(pi/x)=1--> pi/x=(2n+1)*pi/2 for n= 0,1,... So 1/x= n+1/2--> x=2/(2n+1) (2n+1)pi/2= tan(pi*(2n+1)/2)For small k the equation tank=k is an identity

try this: http://www.rfbooth.com/tech/exam/

The matrix of a nilpotent transformation over a cyclic invariant subspace relative to the basis x, Ax, A2x, ..., Am-1x is particularly simple. It has ones just above the main diagonal and zeros elsewhere, as in this four-dimensional example: | 0 1 0 0 | | 0 0 1 0 |...