Hi.
I'm having problems understanding
I always get 0 when I try to solve it with conventional algebra but the answer is
Bonus question: How do I get the enclosing brackets in my tex code to cover completely, instead of being small? Also, how do I do a space between and ?
Thanks!
Not sure what you mean by trying to solve with conventional algebra. Using the definition of the derivative you have:
Bonus questions: to make the parentheses larger you can use "\left(" and "\right)", like this:
To make a space use "\ " - that's backslash followed by a space: "a b c" yields , wheras "a \ b \ c" yields .
Thanks guys. I see how it works with this rule, but can you put it up in the fundamental formula:
Okay I have no idea how this tex code is gonna come out seeing as I can't preview my answer, but I am asking to see the proof in the fundamental formula: (f(x+delta X) - f(x))/delta x
Edit: holy sh** that came out almost right..
Hold on...I'm trying to get this to work.. I can't seem to get it to work!
In this: http://latex.codecogs.com/png.latex?%20\frac%20{d(\frac%201%20x)}{dx}%20=%20 \lim%20_{h%20\to%200}%20\frac%20{\frac%201%20{x+h} %20-%20\frac%201%20x}%20h%20=%20\lim%20_{h%20\to%200}% 20\frac%20{x%20-%20(x+h)}{x(x+h)%20h}%20=%20\lim%20_{h%20\to%200}% 20\frac%20{-1}%20{x(x+h)}%20=%20\frac%20{-1}%20{x^2}
(sorry for long link)
How does the swap between numerators happen and how does x-x-h become -1? -h becomes 0??
Thanks.