# Thread: 2.6.62 inverse integrals with substitution

1. ok this is from my overleaf doc
so too many custorm macros to just paste in code
but I think its ok,,, not sure about all details.

I got ???? somewhat on b and x and u being used in the right places

2.

3. Originally Posted by karush
ok this is from my overleaf doc
so too many custorm macros to just paste in code
but I think its ok,,, not sure about all details.

I got ???? somewhat on b and x and u being used in the right places
Ummm....

-Dan

OK this one was kinda obvious but usually that is where I make the errors especially where there is substitution.
I post another one here soon.

5. Originally Posted by karush
That all looks correct to me, except that at one point in the solution of 6.6.62 you have written $du=dx$. That should be $\dfrac{du}4 = dx$ (which is what you have correctly used in the following line).