Recent content by schulzy

I would like to solve integro-differential equation with Runge-Kutta, but I don't know, how can I begin it. Do you have some articles or examples, where I can understand, how I solve an integro-differential equation. I don't know what can I do with integral. Thank you for your reply.

I know that x=cos(t) y=sin(t) z=b*t these equation describe a simple spiral, but I want to drawing complicated shape, like in attachment.

Homework Statement I want to modelling a light bulb filament in MATLAB, but I don't know, what functions describe this shape. My question is, what are equation (x,y,z) which describe the light bulb filament.

Homework Statement We will make a Spin-Echo experiment, and we know \rho_{w}, T1_{w},T2_{w}, \rho_{g},T1_{g},T2_{g}, where T1 and T2 are relaxation time,\rho is a proton density, and g mean gray matter, w mean white matter. We search TR and TE, TR is a repetition time, TE is an echo time. We...