Mathematica 9 is now available
Student Support Forum
Student Support Forum: 'label solutions' topicStudent Support Forum > General > "label solutions"

Next Comment >Help | Reply To Topic
Author Comment/Response
03/10/05 09:26am

I am trying to do the following:

I have 3 equations:

f[theta, thetafield] = Bres*Cos[thetafield-theta] - 4*PI*Meff*Cos[2*theta] (1)

g[theta, thetafield] = Bres*Cos[thetafield-theta] - 4*PI*Meff*(Cos[theta])^2 (2)


Bres*Sin[thetafield-theta] - 4*PI*Meff*Sin[2*theta] = 0 (3)

(4*PI*Meff and Bres are just parameters, and the variables are theta and thetafield)

The purpose is to write the functions f and g as a function of Bres and Meff only for each angle thetafield ranging from 0 to PI/2

The idea is to use equation (3) at first in order to get the solution theta for different thetafield.

My script is as follow:


h[theta_] := Bres*Sin[thetafield-theta] - 4*PI*Meff*Sin[2*theta];

For [thetafield==0, thetafield<PI/2, thetafield+=1,
Solve [f[theta]==0, theta]

The problem with this script is that I can’t label each solution for each thetafield, and therefore use them in Equation 1 and 2.
The Mathematica output is a series of solutions in bracket.

I would need a script that enables to find solutions theta of (3) for different thetafield.

For example, something like

thetafield=Pi/10, Theta1=……,
thetafield=Pi/5, Theta2=…...

Then, enter those solutions and the value of thetafield in (1) and (2)….and finally have f and g as a function of Bres, Meff at fixed thetafield value.

Thanx for your help

URL: ,

Subject (listing for 'label solutions')
Author Date Posted
label solutions jm 03/10/05 09:26am
Re: label solutions Randy 03/18/05 6:40pm
Next Comment >Help | Reply To Topic