Hi!
I tried doing this equation:
xsin2x dx
my answer was -1/2x cos(2x) + 1/4 sin (2x)
but it seems that the answer is wrong!
i already tried doing it several times and it keeps on giving me the same answer! help!! and please show work!
I tried doing this equation:
xsin2x dx
my answer was -1/2x cos(2x) + 1/4 sin (2x)
but it seems that the answer is wrong!
i already tried doing it several times and it keeps on giving me the same answer! help!! and please show work!
-
You're correct!
int(x*sin(2*x), x) = (1/4)*sin(2*x) - (1/2)*x*cos(2*x) + C
int(x*sin(2*x), x) = (1/4)*sin(2*x) - (1/2)*x*cos(2*x) + C