S sprocker77 New member Joined Sep 11, 2010 Messages 1 Sep 11, 2010 #1 im doing a math problem and im stuck. i need to find the antiderivative of xln(x)-x. please show the steps needed
im doing a math problem and im stuck. i need to find the antiderivative of xln(x)-x. please show the steps needed
D Deleted member 4993 Guest Sep 11, 2010 #2 sprocker77 said: im doing a math problem and im stuck. i need to find the antiderivative of xln(x)-x. please show the steps needed Click to expand... Do you know how to find the antiderivative of x*ln(x) ?
sprocker77 said: im doing a math problem and im stuck. i need to find the antiderivative of xln(x)-x. please show the steps needed Click to expand... Do you know how to find the antiderivative of x*ln(x) ?
G galactus Super Moderator Staff member Joined Sep 28, 2005 Messages 7,203 Sep 12, 2010 #3 Write as \(\displaystyle \int xln(x)dx-\int xdx\) Use parts on the first one. Try letting \(\displaystyle u=ln(x), \;\ dv=xdx\)
Write as \(\displaystyle \int xln(x)dx-\int xdx\) Use parts on the first one. Try letting \(\displaystyle u=ln(x), \;\ dv=xdx\)
