Revision history [back]
 | 1 | initial version |
You must use trig_reduce():
sage: exp1.trig_reduce()
sin(x1 + x2)
| | 2 | No.2 Revision |
You must use trig_reduce():
sage: exp1.trig_reduce()
sin(x1 + x2)
The reverse operation is trig_expand():
sage: exp2 = sin(x1 + x2)
sage: exp2.trig_expand()
cos(x2)*sin(x1) + cos(x1)*sin(x2)
