Tagged Questions
6
votes
3answers
206 views
Is the complex derivative “speed”?
The first thing I was told about the real derivative is that it's "how fast the function is growing" at a given point. This interpretation wasn't addressed in my complex analysis classes. Can the ...
0
votes
1answer
36 views
Critical numbers of $x^{-5}\log x$
On a homework problem, I got the wrong answer and figured out what to put in for it to be marked correct (online homework), but I am unsure why it is right.
The problem is to find the critical ...
0
votes
2answers
265 views
How to prove that r is a double root if and only if it is a root of a polynomial and of its derivative.
I don't know how to start the question. The title is self explanatory. How to approach and make a formal proof?
0
votes
1answer
63 views
First derivative
What would be the further steps for the case like this:
I am finding the first derivative of a function: $f(x) = \ln(1+x^2)$
So the procedure would then be:
$f'(x) = \frac{2x}{1+x^2}$.
$f'(x) ...
