Use integration by parts to find the following....
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Use integration by parts to find the following....

[From: ] [author: ] [Date: 12-10-07] [Hit: ]
i already tried doing it several times and it keeps on giving me the same answer! help!! and please show work!-Youre correct!int(x*sin(2*x),......
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!

-
You're correct!

int(x*sin(2*x), x) = (1/4)*sin(2*x) - (1/2)*x*cos(2*x) + C
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