This is what I did:
2 int. 1 to 4 ue to the u du
then integration by parts:
dv=e to the u dy
v=e to the u
=ue to the u-2 int. 1 to 4 e to the uu2/2
=ue to the u-2|u2eu-eu2u (1 to 4)
=ue to the u-16e4-6e (after I pluged in 4 and 1)
Can someone please show me what I did wrong?
Let's change the variable to something like y instead of u (which is used in the integration by parts formula.)
Now let's do the integration by parts.
Now you take it from here. And remember, bookkeeping is important! Keep track of the details; this is where you seem to have most of your problems.
The integral is from 1 to four. After what you gave me I put:
=ye to the y-2|1 to 4 e to the y
=ye to the y-2(e to the 4tj -e to the 1st)
=ye to the y-2e to the 4th+2e
Now, do I plug in y with sq. x?
So, my final answer would be sq.xe to sq.x-2e4+2e+c???
this thread. You can also left click on the equations and a box will come up telling you what the code is.