problems with integration

[Gilles]

(11-29-2014 11:42 AM)resolved Wrote:  in textbook CAS mode,

int(-3*(x-3)^2 + 3*(x-9)^2 + 21*(x-3) + 18*(x-9)-24)

(...)

what was the result you got by hand????

-3*(x-3)^2 + 3*(x-9)^2 + 21*(x-3) + 18*(x-9)-24

is : 3*x-33

int is : (3/2).x²-33.x+C