So the mathbook says:
f(x) = ln[x^n]
f'(x) = n/x
but it doesn't give an explanation to why. Please do tell me as the website of my distance education company isn't responding at the moment.
Name:
Anonymous2005-12-01 15:40
sigh...
f = log(x^n) = n*log(x)
f' = n*(log(x))'
f' = n*(1/x)
f' = n/x
Name:
Anonymous2005-12-01 16:55
Nevermind, I figured it out. I had forgotten that:
ln[x^n] = n * ln[x]
Name:
Anonymous2005-12-01 16:57
(Had the thread open in tab, wrote reply, added it, saw that you had already answered)
Thanks anyways. The logarithm stuff was in an earlier course so I had forgotten most of it.
Name:
Anonymous2005-12-02 13:44
Why the curly brackets? Curly brackets access arrays. Use parenthesis for functions and operations.