How to separate negative and positive terms in to two different expressions
4 次查看(过去 30 天)
显示 更早的评论
I am using symolic vavriables
syms a b c d f g
Where all syms variables are positive
and have, for example the following expression A
F=a- b*d+ g*c-a*c+ d*g
my actual expression is much longer but how can I separate the negative vs the positive terms and put them in say in x and y?
I appreciate any help .
Thank you!
0 个评论
采纳的回答
Ameer Hamza
2020-12-3
Try this
syms a b c d f g
F = a - b*d + g*c - a*c + d*g;
parts = children(F);
parts = [parts{:}];
assume(symvar(parts)>0)
sgns = sign(parts);
assume(symvar(parts), 'clear')
x = parts(sgns==1);
y = parts(sgns==-1);
4 个评论
Ameer Hamza
2020-12-3
Yes, it seems something related to old release. It seems that children() does not return a cell array in your case.
更多回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Number Theory 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!