Today, those of you who are active on my forum may know that I lowered my post count into the negatives for a bit of fun. You may also know that I went offline shortly afterwards in order to have a rest, and that by the time I had returned, I had forgotten what I had done.
Well, I think I know why. During my rest, I had a bath, and during my bath, I got bored. I did, however, manage to find a pencil, although, as I had no paper, I had to work on the white tiles in the bathroom. Yes, I know what you're thinking - I was supposed to be resting. However, this 'work' was purely recreational - I was trying to prove that y = xn implies that dy/dx = nxn-1. Normally, I would have tried first in my head (I've solved a BMO1 problem in my head before), but I knew that this derivation was going to require me to do a binomial expansion, so while I probably could have managed, I preferred to have it written down. On the tiles.
I eventually got so caught up with this that I had forgotten all about the negative post count - and I bet you'll be able to vouch for me. You were probably so busy wondering who would differentiate from first principles in the bath because they were bored that you had forgotten too.
Given that, I reckon you can also guess at what my "serious problem" is...
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