Solve for x after x and d have been reassigned new values after e4 yields an error [].



-----maxima-bounces at math.utexas.edu wrote: -----

>(%o5)?[y?=?0]



>Now?e4?has?been?reassigned?new values?at?e5,?x=50?and?d=50.?If?I?write?e6:?solve(e5,x);?then?I?get?[].

I do not understand what "new values at e5" means. Currently e5 is [y=0] (see output %o5). That makes
input (%6) equivalent to solve([y=0], x). Because there are no values for x that satisfy the equation y=0,
Maxima gives the empty list (not an error) as output in (%o6). 

 >(%i6)?e6:?solve(e5,x);
 >(%o6)???????????????????????????????
 >[]

I don't see a problem. What am I missing?

--Barton