1) How to extract the right-hand side on line %o4 below?
2) On line %o5 below, how to get dV/dt = 250/7 instead of 0=250/7?
Maxima 5.22.1 http://maxima.sourceforge.net
using Lisp GNU Common Lisp (GCL) GCL 2.6.8 (a.k.a. GCL)
Distributed under the GNU Public License. See the file COPYING.
Dedicated to the memory of William Schelter.
The function bug_report() provides bug reporting information.
(%i1) depends(P,t,V,t);
(%o1) [P(t), V(t)]
(%i2) P*V^(1.4)=C;
1.4
(%o2) P V = C
(%i3) diff(%,t);
0.4 dV dP 1.4
(%o3) 1.4 P V -- + -- V = 0
dt dt
(%i4) solve(%,diff(V,t));
dP
5 -- V
dV dt
(%o4) [-- = - ------]
dt 7 P
(%i5) subst([diff(P,t)=-10,V=400,P=80],%);
250
(%o5) [0 = ---]
7