Each time I want to know how big a symbolic formula or variable is, it always return 8 bytes. I have tracked this issue from Matlab 2016b until now (2018b) and anything change.
syms a b c d e
h = a*b*c*a*c*d*e+a*b+c+d*e-a
f(a,b,c,d,e) = a*b*c*a*c*d*e+a*b+c+d*e-a
whos a h f
Name Size Bytes Class Attributes
a 1x1 8 sym
f 1x1 8 symfun
h 1x1 8 sym
Do someone know why this happen and how to solve it?