Hi, I just noticed that for your definition of the short run you said at least one input is variable. I googled the definition of the short run and it said the period where at least one input is fixed. Im a little lost here, which one is the right one?
Oops! Looks like I misspoke there. You are correct. At least one is fixed in the short-run and all inputs are variable in the long run. I'll make an update soon.