5 ms·
Can anyone explain why this is a valid operation? http://wp.com/latex.php?latex=\lim_{x%20\to%200^{+}}%20x^{x}%20%20=%20\lim_{x%20\to%200^{+}}%20\exp(\log(x^{x}
by blackrabbit 12y ago
Can anyone explain why this is a valid operation?
http://wp.com/latex.php?latex=\lim_{x%20\to%200^{+}}%20x^{x}%20%20=%20\lim_{x%20\to%200^{+}}%20\exp(\log(x^{x}))&bg=ffffff&fg=000&s=0 http://wp.com/latex.php?latex=\lim_{x%20\to%200^{+}}%20x^{x}...
- my_username_is_ 12y agoit's using log to mean log base e, also known as the natural log or ln. you can do that because they're inverse operations (I think that's the right term for it, it's been a while since a formal math class) so they undo each other
- clebio 12y agoYes. It's an identity relationship. x = exp(log(x)) http://en.wikipedia.org/wiki/List_of_logarithmic_identities#Canceling_exponentials http://en.wikipedia.org/wiki/List_of_logarithmic_identities#...
- blackrabbit 12y agoThanks!