What observations? Did you mean the reaction between metals and acids?
If yes,
You will see less gas bubbles produced from the reaction.
And the metal will dissolve slower.
Wow. Much longer than I thought. Thanks
Second approach:
\(\sqrt{x}-\sqrt{y} = 1\\ \sqrt y = \sqrt x - 1\\ y = x - 2\sqrt x + 1\\ y' = 1-x^{-1/2}\\ y''=\dfrac{1}{2}x^{-3/2}=\dfrac{1}{2x\sqrt x}\)
Found out that Melody missed the very last step....... knowing that sqrt x - sqrt y = 1, should have changed the numerator to 1.
Took me an hour to type it out. LOL
:P
Nope. I am 14 yrs old and school is teaching some Algebra 1. I learnt through all those Algebra 2, Geometry, Trigonometry, and Calculus all by myself :)
I started to know Calculus when I was 13.
This is Calculus. My favourite branch of Mathematics.
Sorry. Too lazy to press the calculator and thanks Alan for correcting my mistake.
cos(180°) = -1, not 1
Thanks everyone :D
LOL Guest, you serious??
ElectricPavlov:
And maybe the wolf have some kind of eating disorder. LOL
