The derivative is still not correct. Are you doing it by hand? Please check the function P(x) that you're differentiating. (Subhotosh and I have each...
Thanks mmm4444bot for the confirmation, looks like I've gone down a blind alley on finding a solution.
I was beginning to doubt my sanity last night...
I get the same answer as mmm4444bot, so i'm confused I've attached my workings and the original document. I either missing something obvious or this...
You have enough information to find the hypotenuse of the right triangles (at the top) using Pythagorean Theorem. (You've been given the height, and...
yo that was quick i didn't know what this similar triangles thing was so i looked it up and was able to get the answer in less than 1 minute.
thanks...
Those topics generally come later. When calculus is first introduced, dx is not treated as a number. Once students get used to concepts and notations...
What I don't understand about the whole debate is, if dx is not treated as a number, but as part of an inseparable operator, symbol, etc., how would...