I would like to build long expressions or functions.
I tried it this way:
(%i1) a:b+c;
(%o1)??????????????????????????????? c + b
(%i2) b:d+e;
(%o2)??????????????????????????????? e + d
(%i3) c:f+g;
(%o3)??????????????????????????????? g + f
(%i4) a;
(%o4)??????????????????????????????? c + b
I was hoping to see
(%o4)??????????????????????????????? g + f + e + d
instead of?
(%o4)??????????????????????????????? c + b
So then I read a few tutorials and realized that I needed to tell Maxima to recalculate a.
(%i5) ''a;
(%o5)??????????????????????????? g + f + e + d
OK.
Next I tried to change one of the values upon which a is dependent:
%i6) a;
(%o6)??????????????????????????????? c + b
(%i7) d:0;
(%o7)????????????????????????????????? 0
(%i8) ''a;
(%o8)??????????????????????????? g + f + e + d
(%i9) d;
(%o9)????????????????????????????????? 0
(%i10) ''a;
(%o10)?????????????????????????? g + f + e + d
So d was set to 0, but a doesn't realize that.? I clearly am looking at this wrong.? Since d = 0, please explain why I didn't get:
(%o10)?????????????????????????? g + f + e
Next I tried functions:
%i1) a(x):=b(x)+c(x);
(%o1)???????????????????????? a(x) := b(x) + c(x)
(%i2) b(x):=d(x)+e(x);
(%o2)???????????????????????? b(x) := d(x) + e(x)
(%i3) c(x):=f(x)+g(x);
(%o3)???????????????????????? c(x) := f(x) + g(x)
(%i4) a(x);
(%o4)????????????????????? g(x) + f(x) + e(x) + d(x)
(%i5)? g(x):= value1;
(%o5)?????????????????????????? g(x) := value1
(%i6) f(x):=value2;
(%o6)?????????????????????????? f(x) := value2
(%i7) e(x):=value3;
(%o7)?????????????????????????? e(x) := value3
(%i8) d(x):=value4;
(%o8)?????????????????????????? d(x) := value4
(%i9) a(x);
(%o9)????????????????? value4 + value3 + value2 + value1
(%i10) value4:0;
(%o10)???????????????????????????????? 0
(%i11) a(x);
(%o11)???????????????????? value3 + value2 + value1
This seems to work.? But how would I clear the definition for value4?? Also, I had to add "(x)" to the function definitions even though it's not really a function of x.? But if I leave the "(x)" out, Maxima complains.
I looked for answers in the faq, but didn't find anything.? Thanks for reading.? Please consider taking a few minutes to get me rolling with this.
Steve