![Relationship between kinetic friction and static friction [closed]](https://news.conceivablytech.com/uploads/relationship-between-kinetic-friction-and-static-friction-closed_720.jpg)
updates
Relationship between kinetic friction and static friction [closed]
I am having trouble understanding the link between kinetic and static friction. Specifically how the force "locks down" or instantaneously stops an object...
Apr 19, 2026
Archive: Updates
updates
limit of $2^n/3^{n/2}$ as $n\to\infty$
$$ \lim\limits_{n\to\infty}\frac{2^n}{3^{\frac{n}{2}}}$$ I used wolfram to get the limit as follows: "lim n tends infinity 2^n/3^(n/2)". And using L'...
Apr 19, 2026
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How to prove that minimum of two exponential random variables is another exponential random variable?
How can I prove that the minimum of two exponential random variables is another exponential random variable, i.e. Z = min(X,Y)
Apr 18, 2026
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Definition of cluster point
I'm studying if the book Multidimensional Real Analysis by Duistermaat and the definition of cluster point is: A point $a \in \mathbb{R}^n$ is said t...
Apr 18, 2026
updates
Logarithm value difference between calculator and table
Look at the example given at the bottom of the attached table. Log(0.003674) = -3.5652. I understand how this is procured from the log table. But if you u...
Apr 18, 2026
updates
Textbook recommendation for multiple integrals
Can anyone recommend a textbook for double and triples integrals. I'd like one that covers double integrals in polar coordinates and triples integral...
Apr 18, 2026
updates
Difference between limsup and sup
I'm having some difficulty visualising the difference between the limit supremum and supremum (and for limit infimum/infimum) for bounded sequences. ...
Apr 18, 2026
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An explanation for undergraduated students about why the Jacobian conjecture is hard
I remember from multivariable calculus that the implicit function theorem and the inverse theorem are important theorems. Maybe for the students seem an u...
Apr 18, 2026
updates
Best book of topology for beginner?
I am a graduate student of math right now but I was not able to get a topology subject in my undergrad... I just would like to know if you guys know the b...
Apr 18, 2026
updates
Derivative of $\log^{k}(x)$
What is the derivative of $f(x)= \log^{k}x$ where $k$ is a positive integer? Update: Hello I have found that $\log^k n$ = $(\log n)^k$ (Thomas H. Cormen, ...
Apr 18, 2026
