I think I have encountered a bad issue about matlab, perhaps it is a bug. Consider the following commands
>> syms x x0 a b
f =log(a + b*x)/b
but now, trhe following command does not give me the result it should (it feels as if matlab is unable to solve this easy integration)
f =int(1/(a + b*x), x, x0, x)
and I have to fix this by the command f=int(1/(a+b*x),x);f=f-subs(f,x,x0). Note that, in some other cases matlab does the job correctly, for instance:
f =cos(x0) - cos(x)
It took a rather long time for me to understand why my code (not these stuff. I am talking about a very big code where these stuff were just a tiny part of it) does not produce the result it must produce.
I hope matlab developers really correct such bugs! Very annoying part is that matlab is not free and has such problems!!!