Source code

/*
SymbolicC++ : An object oriented computer algebra system written in C++
Copyright (C) 2007 Yorick Hardy and Willi-Hans Steeb
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <iostream>
#include "symbolicc++.h"
using namespace std;
int main(void)
{
Symbolic alpha("alpha");
Symbolic X, XI, dX, result;
X = ( ( cos(alpha), sin(alpha) ),
(-sin(alpha), cos(alpha) ) );
cout << X << endl;
XI = X[alpha == -alpha]; cout << XI << endl;
dX = df(X, alpha); cout << dX << endl;
result = XI * dX; cout << result << endl;
result = result[(cos(alpha)^2) == 1 - (sin(alpha)^2)];
cout << result << endl;
return 0;
}