@westofer I never really took a lot of calculus in school. Later when I've done it for my personal stuff (mostly related to physics) I have never bothered making the c explicit.
Also my main maths tool of choice, Maxima, doesn't include it either.
When does it really matter?
This is Mur 
@loke @westofer@mstdn.social
well it matters when giving math exams. Here they cut 1 point if you failed to write the +C in the solution of an integration problem.
