Solved questions-back

But still i have a question concerning this. i could have also solved it using:

why does that happen?.

Now for a very hard question:

try solving it in anyway you wish...even though i had to solve it with the "Stolz rule": .

Thanks alot to "LANDEN" for his help in this solution.

That is the right solution, thanks to "LANDEN" (again)

now another question concerning this question, try finding the mistake in this try to solve it solution:

i couldnt find my mistake, so does some else... you try finding it.